Bulbophyllum seidenfadenii

Bulbophyllum seidenfadenii A.D.Kerr, Dansk Bot. Ark. 29(1): 174 (1973).

Bulbophyllum seidenfadenii A.D.Kerr, Photo by  Bun Anhbun Phan

its native range is China (Yunnan) to Laos.

Latin Name: 

Bulbophyllum seidenfadenii A.D.Kerr

Family: 

Orchidaceae Juss.

Synonym:

Bulbophyllum jingdongense A.Q.Hu, D.P.Ye & Jian W.Li

Vietnamese  name:

Lọng  nho  khô

English Name:

Seidenfaden's Bulbophyllum (Swedish diplomat and Orchid Botanist 1900's).

Description: 

Small epiphyte with creeping rhizome. Pseudobulbs 1.5–5 mm apart along the rhizome, 3–7 mm tall, 4–9 mm in diam., compressed-subglobose, reddish-purple to dark green, 1-leaved. Leaf persistent; petiole very short or indistinct, up to 1 mm long; lamina bluish-green above, reddish-purple below, ovate to elliptic, 7.5–12.5 mm wide, 11–14.7 mm long, thick, leathery, base rounded, apex emarginate. Inflorescence emerging from the base of pseudobulb, sub-umbellate, 4-flowered; peduncle ca 3 mm long, with 2–3 membranous, tubular sheaths; floral bracts minute, lanceolate, up to 1 mm wide, 3–4 mm long, apex acuminate. Flowers pale yellow, sepals and petals covered with sparse to dense reddish-purple pustules, 9–10 mm long; pedicellate ovary 3–3.5 mm long. Dorsal sepal ovate-triangular, 2 mm wide, 1.5–1.7 mm long, 3-veined, margin entire, apex acute. Lateral sepals lanceolate, 2–2.5 mm wide, 7–7.5 mm long, 3-veined, 2/3 of basal part adnate to the column-foot, lower edges basally connate, upper edges incurved- twisted, with middle parts converging and touching each other, distal parts separate, each with involute margins, forming a conical shaped structure. Petals oblong, 2 mm wide, 1.5–1.7 mm long, ca 1.5 mm thick, broadly V-shaped in cross-section, margin entire, apex acute. Labellum simple, ligulate, reddish- purple, 2–2.5 mm long, 1.5–2 mm wide, apex sub- rounded and slightly decurved. Column subcylindrical, 2–2.5 mm long, pale yellow, apex pale pink, with a tiny bright yellow spherical projection just below the stigmatic cavity (described as a ‘gland’ by Hu et al., 2017, but there is no evidence as yet that it secretes anything); rostellum present; column-foot incurved, 1.2–1.5 mm long; stelidia short, 0.3 mm long, apex sub-truncate to broadly acute, margin slightly erose; anther cap pinkish white to yellow, ca 1 mm wide, glabrous.

Distribution:

S China (Jingdong, Yunnan) and N & C Laos (Vientiane & Nakai), Thailand.― NORTHERN: Phitsanulok [Ban Romklao Botanic Garden nursery] and  Vietnam (Lam  Dong).

Ecological:

Mixed broadleaved and coniferous forests at elevations around 500 m as a mini=miniatuire sized, hot to warm growing epiphyte.

Flowering times:

Blooms in the winter and early spring.

Flower size:

6.0 mm.

Cultivation:

Typus:

Laos, mountain range north of Vientiane, Ritaville, 750 m, 12 Jan. 1969, A.D. Kerr 2826 (holotype C photo seen).

Reference: 

theplantlist.org

https://www.ipni.org/n/77163344-1

http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77163344-1

http://www.orchidspecies.com/bulbseidenfadenii.htm.

https://orchids.fandom.com/wiki/Luisia

THITIPORN PINGYOT, PIYAKASET SUKSATHAN & NAWIN INTHAKUL; Bulbophyllum seidenfadenii (Orchidaceae), a new record for Thailand; THAI FOREST BULL., BOT. 47(2): 260–263. 2019. DOI https://doi.org/10.20531/tfb.2019.47.2.15