Campanulorchis Brieger
Creators: name: Vo, Doan Trung
name: Averyanov, Leonid
name: Maisak, Tatiana
name: Canh, Nguyen Van
name: Nguyen, Huu Cuong
name: Dang, Minh Quan
name: Dang, Van Son
name: Truong, Quang Tam
name: Vuong, Truong Ba
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Campanulorchis

description: Campanulorchis Brieger in Brieger et al. (1996: 750).
Type: — C. globifera (Rolfe) Brieger (≡ Eria globifera Rolfe).
4 species in Cambodia, Laos, Vietnam, and S China (Hainan) (Fig. 1)
Description:—Herbs epiphytic or lithophytic. Pseudobulbs 1-leaved, ovoid, globular, to broadly ovoid, pubescent when young, distant on creeping rhizome, covered by persistent bracts. Rhizome plagiotropic, stout, semiwoody. Leaves petiolate; petiole and leaf blade pubescent abaxially, almost glabrous adaxially. Peduncle erect, 1–4-flowered, arising from the apex of new pseudobulb; peduncle, rachis, pedicel and ovary densely tomentose. Flowers medium sized, widely opening or campanulate, sepals and petals free; sepals subsimilar, densely tomentose outside, glabrous inside; petals glabrous, slightly oblique. Lip 3-lobed, recurved, moveably joined to column foot apex; median lobe oblong; side lobes erect, half-ovate, slightly oblique; disc with 2–3 keels. Column simple, shortly cylindrical, wingless, at apex with broadly conoid stelidia; column foot as long as column, perpendicular to the column base, outside densely tomentose, stigma almost circular, anther cap hemi globular, finely papillose; pollinia in form of 8 half ovoid bodies connected by small amorphous viscidium. Fruit erect or ascending, narrowly obconoid, densely hairy capsule.
Key to species
1. Inflorescence normally with 2–4 flowers; peduncle 8–12 cm long; leaves below densely white tomentose.........1. C. pulverulenta
–. Inflorescence always 1-flowered; peduncle normally 1.5–3.5 cm long; leaves below glabrous .......................................................2
2. Sepals and petals uniform ochre yellow; lip not swollen on the margin; pedicel, ovary and abaxial surface of sepals brown orange tomentose..............................................................................................................................................................................2. C. thao
–. Sepals and petals white with purple nerves at base; lip swollen on the margin towards the apex; pedicel, ovary and abaxial surface of sepals silvery white hairy ...............................................................................................................................................................3
3. Leaf petiole less than 2.5 cm long................................................................................................................................ 3. C. globifera
–. Leaf petiole 6–8 cm long............................................................................................................................................... 4. C. longipes
description: Published as part of Vo, Doan Trung, Averyanov, Leonid, Maisak, Tatiana, Canh, Nguyen Van, Nguyen, Huu Cuong, Dang, Minh Quan, Dang, Van Son, Truong, Quang Tam & Vuong, Truong Ba, 2022, Taxonomic treatment of the genus Campanulorchis (Orchidaceae), pp. 173-182 in Phytotaxa 561 (2) on page 174, DOI: 10.11646/phytotaxa.561.2.5, http://zenodo.org/record/7059468