AFRICAN

ORCHIDS

Holothrix species some not yet have a key:

Holothrix aphylla (Forssk.) Rchb.f. Nigeria to Yemen.
Holothrix arachnoidea (A.Rich.) Rchb.f. NE. Trop. Africa to Kenya, SW. Arabian Pen.
Holothrix condensata Sond., SW. & S. Cape Prov.
Holothrix elgonensis Summerh. Mt. Elgon of Uganda and Kenya.
Holothrix grandiflora (Sond.) Rchb.f., Cape Prov.
Holothrix hydra P.J.Cribb Tanzania.
Holothrix klimkoana Szlach. & Marg.  Angola.
Holothrix montigena Ridl. Ethiopia.
Holothrix nyasae Rolfe SW. Tanzania.
Holothrix pentadactyla (Summerh.) Summerh. Kenya.
Holothrix praecox Rchb.f. Zaïre, NW. Ethiopia.
Holothrix schimperi Rchb.f. Ethiopia to Kenya.
Holothrix socotrana Rolfe Socotra.
Holothrix squamata (Hochst. ex A.Rich.) Rchb.f. Ethiopia to Uganda.
Holothrix tridentata (Hook.f.) Rchb.f. Cameroon (Mt. Cameroon), Sudan to Ethiopia
Holothrix triloba (Rolfe) Kraenzl.  SW. Tanzania.
Holothrix unifolia Rchb.f. Ethiopia (Gonder, Shewa)

References:
WCSP (2020). 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://wcsp.science.kew.org/ Retrieved 19 May 2020.'