KOLZ Begonia Research Center

KOLZ Begonia Research Center A library of begonia and other plant information gathered by Michael Ludwig and donated by Carrie Karegeannes, Thelma O'Reilly, Rudy Ziesenhenne and others.

Founded by Michael Ludwig January 2006 This is a dream I, Michael Ludwig, never foresaw when I started joining plant societies in 1976. A world full of research materials, past and present, of Begonias and other plants that I love and grow, at my finger tips. I've inherited lifetimes of work from some of the greatest minds to study begonias and I look forward to adding my own studies as well and sharing these treasurers with others. Carrie Karegeannes retired as the American Begonia Society's Nomenclature Director and was moving on to other activities in her life. She had researched and studied begonias for years and had established quite a reputation for herself and her study throughout the world. Carrie wanted her years of research material to be safe, treasured and the work continued. She knew that institutions were often at the whim of their directors or funding and the materials could suddenly be discarded. Her long time friend and research companion, Thelma O'Reilly suggested that perhaps I, Michael Ludwig, would be a good choice to safeguard and use her materials. I'd been in the ABS for about 25 years, enjoyed growing, the study and research of begonias and still had a few years to continue the work. In the spring of 2002, I received a letter that changed my life. Carrie had chosen me to receive her life work. After accepting her offer, I would arrive home after work to find a stack of boxes, full of treasures sitting at my door, delivered from the other side of the country. This continued for months and it was like Christmas as I opened each box, dozens of them, and reviewed the amazing world they contained. All the material was neatly and carefully packed. The material was separated according to its form; file folders, cards, herbarium specimens, books, slides and each were alphabetized. I was amazed at the history and the people involved in this study and correspondence. Begonia researchers from around the world, names I'd seen and read about for years. My father died Sept of 2002 and I would lose myself in this "Begonia World". It also helped when my Begonia mentors and dear friends Bob Ammerman, November 2003; Margaret (Marge) Lee, January 2004 and Mabel Corwin, May 2004 each passed away. They had played an important role in my life and begonia journey. Paul and Ann Lee, Marge Lee's son and daughter -in- law, passed her begonia treasures onto me, which I added to this growing world. I'd talked to Rudolf Ziesenhenne about my activities during my visits to Santa Barbara and his nursery. During a visit in the spring of 2005, he was joking about needing a semi- truck to take all his research materials out of the house when he died. He then took me upstairs in his home to a room full of cabinets, shelves, papers and desk; he pointed to two floor - to- ceiling bookcases and said that I might as well start now! I went into shock. I filled my van that day with his notebooks and books that filled those shelves. Many of them were falling apart from age. I took them home and put them in new binders to preserve these, new to me treasures. Rudy passed away in October 2005. Since his death, his sons, Rudolf H. (Skee) and Fred, continued with his vision and I made many trips to Santa Barbara in 2006 and 2007 to pick up more of Rudy's life work, although never in a semi-truck, and added it to this ever enriching world. I had a vision of a wonderful place in which I could share this fascinating world, so in the fall of 2005 I started remodeling the back 24' x 16' section of my garage. On January 28, 2006, I opened the KOLZ Begonia Research Center (Karegeannes; O'Reilly; Ludwig, Lee; Ziesenhenne) to the Margaret Lee Branch of the American Begonia Society and offered it as their unofficial home. They were amazed and thrilled to explore what KOLZ had to offer and in true Marge Lee Branch fashion, we toasted the event with ch*****ne. Later that day it also hosted the Mabel Corwin Branch's officers meeting. What a Grand Opening! KOLZ continues to host the Marge Lee Branch for meetings. Besides the research material, KOLZ also contains scrapbooks from the Rudolf Ziesenhenne/Santa Barbara Branch; Margaret Lee Branch history; Margaret Lee and Rudolf Ziesenhenne awards and trophies and the library for the Mabel Corwin Branch. KOLZ Begonia Research Center continues to evolve and grow with donations. Thelma O'Reilly, a life long mentor, continues to share and donate her material to me and the Center. Other begonia lovers are leaving their collections to this valuable resource. At the February 2007 meeting of the Margaret Lee Branch, they voted to help me with this project and made a donation to KOLZ to help continue its mission. In September 2007, I gave a seminar at the American Begonia Society's National Convention, on the Seed Fund and KOLZ , which was well received by that late night audience. This led to donations by the Santa Clara Valley and Sacramento Branches, when members took news of my activities to their branches. After speaking to the Westchester Branch of the ABS, Rudolf H. (Skee) Ziesenhenne came up to me with his wife Virginia, and said he had a donation to help, their generosity was overwhelming. Dr. Judith Taylor, author of Tangible Memories: Californians and Their Gardens 1800-1950 came from San Francisco to do research on begonia hybridizers. Her article will appear in 2 issues of Pacific Horticulture in 2009, and a book on hybridizing with a chapter on begonia will be published in the future. Dr. Taylor brought a copy of her book for me and made a donation to KOLZ. See all their names at DONORS . Thank you to all. I have many dreams and visions for this priceless resource and expect others to suggest and help me with projects. This website offers me to a place to host the websites for the San Diego Branches of the American Begonia Society . I'm working on these sites but you can get to them by clicking on the photos of their namesakes at the bottom of any page. The KOLZ Center is available for visits and use by others. I am inventorying this wealth of materials of several lifetimes into a database. I plan to offer seminars and study/research conferences both at KOLZ Center and off site. I continue to gather and receive materials, try to complete newsletter collections and other historical literature and make more herbarium specimens. The ongoing mission of the KOLZ Begonia Research Center is to preserve the materials that were passed on, gather new materials and make it available

09/28/2026

🌸 • 2026 :: leasalongae (Begoniaceae, sect. Petermannia) • A from Tago, Surigao del Sur, Island, Philippines
novataxa.blogspot.com/2026/07/begonilas.html 🌸
DOI: doi.org/10.11646/phytotaxa.767.1.8
A new species of Begonia section Petermannia, Begonia leasalongae, from Surigao del Sur is described and illustrated. It grows on shady, moist, rocky slopes alongside a small creek in sitio Cabugi, Unidos, Tago, Surigao del Sur. The new species resembles Begonia noraaunoriae in having erect stems, obovately oblong leaves, 2-tepaled staminate flowers, 5-tepaled pistillate flowers and an upright capsule, but differs in having stems with setose white hairs (vs. glabrous), lanceolate stipules with an aristate apex (vs. obovately oblong with a roundly acute apex), and capsule with setose white hairs (vs. glabrous). The species is named in honor of Lea Salonga. Based on IUCN criteria, we propose its conservation status as Data Deficient (DD), as only one population is currently known.
Begonia leasalongae Blasco, Alejandro & Rubite sp. nov.

FREDDIE A. BLASCO, G. J. D. ALEJANDRO, et al. 2026. . 767(1); 72-76.
DOI: doi.org/10.11646/phytotaxa.767.1.8 [2026-07-16]
facebook.com/fred8z/posts/1082141397717282

09/28/2026

🔓 • 2026 :: fulvovillosa (Gesneriaceae) • A from western Yunnan, China | 德宏直瓣苣苔
novataxa.blogspot.com/2026/06/oreocharis.html
DOI: doi.org/10.3897/phytokeys.276.182136 🔓


Oreocharis fulvovillosa, a new species of Gesneriaceae, is described and illustrated. This new species has only been discovered on the rock walls of an isolated karst hill at its type locality in Mang City, western Yunnan, China.

Oreocharis fulvovillosa M.Q.Han, H.Jiang & Y.Wang, sp. nov.


Etymology. The epithet refers to the fulvous (yellowish) colour of the long, soft hairs on the petioles.




Yang Wang, H. Jiang, et al. 2026. . 276: 17-23.
DOI: doi.org/10.3897/phytokeys.276.182136 [08-06-2026]

09/28/2026

🔓 • 2024 :: yei (Orchidaceae: Epidendroideae: Aeridinae) • A from Xizang, China | 叶氏白点兰
novataxa.blogspot.com/2026/07/thrixspermym.html
taiwania.ntu.edu.tw/abstract/1988 🔓

A new species Thrixspermum yei M. K. Li, Z. Xing & Y. Luo is described and illustrated from Xizang, China. It is similar to T. fantasticum and T. duplocallosum but differs from them in having a yellowish, ovate, indistinctly 3-lobed lip, disk with 4 yellow papillary front calli densely covered with yellow powder, and base with a cone-like appendage.




Meng-Kai Li, S.-S. Pang, et al. 2024. . 69(2); 138-141. DOI: 10.6165/tai.2024.69.138
taiwania.ntu.edu.tw/abstract/1988

09/28/2026

🔓 • 2025 :: culaochamensis (Gesneriaceae) • A New Species from Vietnam
novataxa.blogspot.com/2026/01/metapetrocosmea.html
DOI: doi.org/10.14258/turczaninowia.28.1.15 🔓
Researchgate.net/publication/391678745

A new species, Metapetrocosmea culaochamensis, discovered in central Vietnam, is described and illustrated. This species resembles M. poilanei but differs in its inflorescence in form of compound cymes with 2 or 3 orders of branching (vs. simple cyme, with 1 order of branching), larger bracts, 10–14 × 7–8.5 mm (vs. ca. 3 × 1.5 mm), corolla tube funnelform (vs. obliquely campanulate), and the stigma with an emarginate apex (vs. entire). In addition, Paraboea myriantha, a species previously known from China, is recorded for the first time in northern Vietnam, which essentially expands the known area of this species.

Metapetrocosmea culaochamensis C. H. Nguyen, N. H. Dang et C. W. Lin, sp. nov.

Etymology. The specific epithet refers to the name of Cu Lao Cham Islands, where the new species was discovered.





Cuong H. Nguyen, Dang H. Nguyen, et al. 2025. . 28(1); 146–154.
DOI: doi.org/10.14258/turczaninowia.28.1.15
Researchgate.net/publication/391678745

09/28/2026

🌸 • 2026 :: sinagtala ( : Asclepiadoideae) • A New, unusual Species from the Philippines
novataxa.blogspot.com/2026/08/hoya.html 🌸
DOI: doi.org/10.11646/phytotaxa.769.3.6


Hoya sinagtala Brillo, Cabactulan & Rodda sp. nov. (Apocynaceae, ) from the Philippines is described. When sterile, it resembles several species of Hoya section , but its flowers make it readily distinguishable by its rotate corolla with a narrowly campanulate tube and free-spreading lobes and triangular-ovate corona lobes. No other species in the genus exhibits this unique combination of characters. The species was originally collected from the wild in Samar Island and subsequently widely distributed in cultivation under the informal name Hoya sp. Samar GN 0003 and Hoya sp. “Yellow Sapphire”; it is herein formally published after nearly seven years of horticultural circulation.




SAMUEL C. BRILLO, D. D. CABACTULAN and M. RODDA. 2026. . 769(3); 287-293.
DOI: doi.org/10.11646/phytotaxa.769.3.6 [2026-08-13]
facebook.com/groups/philippineplants/permalink/28049135471405087

09/28/2026

🔓 • 2026 :: anoleuca (Gesneriaceae) • A from limestone cliffs in Yunnan, China || 沧源石蝴蝶
novataxa.blogspot.com/2026/07/petrocosmea.html
DOI: doi.org/10.1007/s12225-026-10406-z 🔓

Petrocosmea anoleuca M.Q.Han & C.Liu ( ), a new species from , China, is described and colour images and a provisional IUCN conservation assessment are provided. The new species is similar to P. cavaleriei H.Lév., but differs in having subpeltate leaf blades, a white corolla tube base lacking spots, a darker purple throat, purple abaxial lip lobes and nearly straight, sparsely puberulent filaments.


Petrocosmea anoleuca M.Q.Han & C.Liu sp. nov.


Etymology. The term anoleuca derives from Greek roots, ano- (ἄνω, "above") and -leuca (λευκός, "white"), literally meaning "white above". The epithet of the new species refers to the white, upper section of the corolla when in bloom.



Cheng Liu, Jie Cai, et al. 2026. .
DOI: doi.org/10.1007/s12225-026-10406-z [21 July 2026]

09/28/2026

🔓 • 2026 :: pataxoanus & C. beuckeri • Two Ornamental Species of Cryptanthus ( : Bromelioideae) on the brink of Extinction: A and its congener from the 19th century
novataxa.blogspot.com/2026/07/cryptanthus.html
DOI: doi.org/10.11646/phytotaxa.763.3.1 🔓

The authors describe and illustrate a new species of Cryptanthus, C. pataxoanus, found within the Monte Pascoal National and Historical Park, and present new data on its closest morphological relative, C. beuckeri, both endemic to the Atlantic Forest of the state of Bahia, Brazil, and assessed as Critically Endangered (CR). The new taxon represents one of the most ornamental discoveries in recent years due to its marbled foliage, with contrasting greenish-yellow and dark green colors, which is similar to C. beuckeri. The main differences between C. pataxoanus and its closest relative include leaf blades not petiolate or the basal ones sometimes subpetiolate, the much broader portion of the blades distinctly longer, the narrower sepals covered by brown-centered trichomes, and petals without glandulose trichomes. The discovery of the new species results from cooperative work with the Pataxó indigenous community living in Barra Velha and Barra Velha do Monte Pascoal Indigenous Lands, located within the boundaries of the Monte Pascoal National and Historical Park. It symbolizes the inexhaustible richness of the Brazilian biodiversity in general and the Atlantic Forest of southern Bahia in particular, despite its current coexistence with high levels of threat.

Cryptanthus pataxoanus Forzza & Leme, sp. nov.


Etymology:—The name of this new species honors the Pataxó indigenous people. They belong to the Macro-Jê linguistic family and have a long history of resistance, facing challenges such as reclaiming their traditional lands and promoting the value of their culture since the 16th century. The Pataxó predominantly inhabit the extreme south of Bahia, which includes the area of the Monte Pascoal National and Historical Park where the Barra Velha and Barra Velha do Monte Pascoal Indigenous Lands are located. They maintain strong traditions, such as the Patxohã language, rituals (like the Awê), and the use of body paintings that serve as cultural identifiers, in addition to promoting the conservation of the environment within their traditional natural territory.



Elton M. C. LEME, E. P. FERNANDEZ, et al. 2026. . 763(3); 201-218.
DOI: doi.org/10.11646/phytotaxa.763.3.1 [2026-06-24]

09/28/2026

🔓 • 2024 :: andina (Orchidaceae: Maxillariinae) • A from the northern Andes
novataxa.blogspot.com/2026/08/maxillandria.html
DOI: doi.org/10.15517/lank.v24i1.56756 🔓

Maxillaria andina, a new orchid species from high-Andean ecosystems of southwestern and northern , is described. The new species is distinguished by having long and narrowly linear white sepals and petals with revolute margins, lip with mucronate epichile, and callus without hairs or trichomes. Distinguishing characters are provided to differentiate it from morphologically similar species, along with ecological and taxonomical notes. Additionally, Maxillaria sibundoyensis is synonymized with Maxillaria floribunda.



Maxillaria andina Pisso-Florez, J.S.Moreno, P.A.Harding & Baquero, sp. nov.


Etymology: Named in reference to the Andean region of Colombia and Ecuador in South America, where the new species was found. The Andean region is a key area for conserving the diversity of Maxillariinae species.



Gustavo Adolfo Pisso-Florez, Juan S. Moreno, et al. 2024. Lankesteriana. 24(1); 79-91.
DOI: doi.org/10.15517/lank.v24i1.56756 [2024-04-22]

09/28/2026

🌸 • 2026 :: trichopetiolata (Begoniaceae, sect. Baryandra) • A from Bukidnon, Central , the Philippines
novataxa.blogspot.com/2026/09/baryandra.html 🌸
DOI: doi.org/10.11646/phytotaxa.773.2.5
Researchgate.net/publication/414085231

[[ Illustrated by Julieferd Torres ]]

Begonia trichopetiolata from Bukidnon, Central Mindanao, is described and illustrated as a new species endemic to the Philippines. It closely resembles B. mabuhayensis from Surigao del Sur, Eastern Mindanao; however, it differs in having triangular, keeled stipules, densely villose petioles, leaves with 10 primary veins and non-repand margin, shorter inflorescences and primary peduncles, larger bracts, and smaller capsules. Following IUCN Red List criteria, we propose B. trichopetiolata as Critically Endangered (CR). This discovery raises the total number of Begonia species in Bukidnon to 14 and marks the third member of Begonia section recorded in the province.

Begonia trichopetiolata Medecilo, Rubite & Caballes sp. nov.
§ Baryandra

Etymology:—The specific epithet trichopetiolata refers to the petioles entirely and densely covered with long white hairs.



Maria M. P. MEDECILO-GUIANG, R. R. RUBITE, et al. 2026. . 773(2); 162-170.
DOI: doi.org/10.11646/phytotaxa.773.2.5 [2026-09-08]
Researchgate.net/publication/414085231

09/28/2026

🔓 🌿 • 2026 :: jobii (Selaginellaceae) • A from the southern Western Ghats in Kerala, India
novataxa.blogspot.com/2026/09/selaginella.html 🌿
DOI: doi.org/10.5735/085.063.0127 🔓

Selaginella jobii Alen Alex, Abhilash, Gayathri, Sojan, V. Suresh & Leeja, sp. nova (Selaginellaceae) is described as a new lycophyte species from the southern Western Ghats in Kerala, India. It morphologically resembles S. tenera, but can be distinguished by its small habit, basal rhizophores, median leaf traits, lack of vegetative buds and tapering strobili. The taxonomic delimitation is strongly supported by multivariate morphometric analysis (PCA) of macro- and micromorphological traits. Molecular phylogenetic analysis based on the rbcL gene places S. jobii as a sister to S. miniatospora. Growing on shaded laterite habitats in Palakkad, the species has an Area of Occupancy of less than 10 km2. Consequently, it is preliminarily assessed as Critically Endangered (CR) following the IUCN criteria.



Alex Philip Alen, Kalathil S. Abhilash, et al. 2026. Annales Botanici Fennici. 63(1); 201-211.
DOI: doi.org/10.5735/085.063.0127 (13 August 2026)

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