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Calyptrochilum christyanum (Rchb.f.) Summerh. in J.Hutchinson & J.M.Dalziel, Fl. W. Trop. Afr. 2: 450 (1936).
Homotypic Synonyms:
Angraecum christyanum Rchb.f., Gard. Chron., n.s., 13: 806 (1880).
Heterotypic Synonyms:
Angraecum schoellerianum Kraenzl. ex Schweinf., Bull. Herb. Boissier 2(2): 112 (1894).
Angraecum malangeanum Kraenzl., Bot. Jahrb. Syst. 22: 26 (1895).
Angraecum moloneyi Rolfe in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 7: 145 (1897).
Angraecum mombasaense Rolfe in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 7: 145 (1897).
Angraecum ovalifolium De Wild., Not. Pl. Util. Congo 1: 161 (1903).
Angraecum pynaertii De Wild., Not. Pl. Util. Congo 1: 160 (1903).
Angraecum zigzag De Wild., Not. Pl. Util. Congo 1: 143 (1903).
Rhaphidorhynchus moloneyi (Rolfe) Finet, Bull. Soc. Bot. France 54(9): 41 (1907).
Angraecum marsupiocalcaratum Kraenzl., Bot. Jahrb. Syst. 51: 397 (1914).
Calyptrochilum moloneyi (Rolfe) Schltr., Bot. Jahrb. Syst. 53: 595 (1915).
Calyptrochilum mombasaense (Rolfe) Schltr., Bot. Jahrb. Syst. 53: 595 (1915).
Calyptrochilum orientale Schltr., Bot. Jahrb. Syst. 53: 595 (1915).
Calyptrochilum schoellerianum (Kraenzl. ex Schweinf.) Schltr., Bot. Jahrb. Syst. 53: 595 (1915).
Angraecum bokoyense De Wild., Bull. Jard. Bot. État 5: 182 (1916).
Calyptrochilum bokoyense (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 84 (1918).
Calyptrochilum malangeanum (Kraenzl.) Schltr., Beih. Bot. Centralbl. 36(2): 84 (1918).
Calyptrochilum marsupiocalcaratum (Kraenzl.) Schltr., Beih. Bot. Centralbl. 36(2): 84 (1918).
Calyptrochilum ovalifolium (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 85 (1918).
Calyptrochilum pynaertii (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 85 (1918).
Calyptrochilum zigzag (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 85 (1918).
Angraecum ivorense A.Chev., Explor. Bot. Afrique Occ. Franç. 1: 618 (1920).
Campylocentrum marcalianum Campacci, Bol. CAOB 58: 52 (2005).
Description:
Epiphytic, sometimes lithophytic herb. Stem woody, leafy, to about 50 cm long, pendent or standing out horizontally, mostly unbranched. Roots long, stout, c. 7 mm in diameter, arising at nodes. Leaves numerous, distichous, usually 6–8 × 1.5–2.5 cm, ligulate, but occasionally longer or narrower, unequally and obtusely 2-lobed at the apex, fleshy, olive-green. Inflorescences borne along underside of stem, 1.5–4 cm long, densely 6–9-flowered, the rhachis zigzag. Flowers white, yellowish in throat, turning apricot-coloured as they fade, often lemon-scented; spur greenish. Sepals and petals 5–10 × 2.5–4 mm, ovate or ovate-elliptic, the lateral sepals slightly oblique, the petals slightly shorter than the sepals. Lip 7–12 × 7–10 mm, 3-lobed near the base; side lobes rounded; mid-lobe 5–10 × 5–8 mm, oblong, emarginate, sometimes with a mucro in the sinus; spur 9–11 mm long, geniculate, wide-mouthed, constricted in the middle and globose at the apex. Column 1–2 mm long.
Habitat:
Epiphytic in riverine forest and woodland, occasionally lithophytic 500–1500 m.
Cultivation:
As given for the genus, warm to cool growing, monopodial epiphyte.
Distribution:
Brazil (SE. Bahia), Trop. Africa
References:
Orchids of East Africa Piers 1968; The Orchids of South Central Africa Williamson 1977; Encyclopedia of Cultivated Orchids Hawkes 1985; Flora of Tropical East Africa Orchidaceae Part 2 Cribb 1984; Manual of Orchids Stewart 1995; Orchids of Kenya Stewart 1996; African Orchids in the Wild and Cultivation La Croix 1997; Flora Zambesiaca Vol 11 Part 2 Pope 1998; Field Guide to the Ethiopian Orchids Demissew, Cribb & Rasmussen 2004; Angraecoid Orchids Stewart, Hermans, Campbell 2006; WCSP (2017). 'World Checklist of Selected Plant Families. 24.02-2017; http://apps.kew.org/wcsp/
Images:
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Habitat/In situ	Habitat/In situ	Habitat/In situ	In culture	In culture	In culture
Photograph©Bart Wursten. Image used with kind permission.	Photograph©Bart Wursten. Image used with kind permission.	Photograph©Bart Wursten. Image used with kind permission.	Photograph ©Gilles Grunenwald. Image used with kind permission.	Photograph ©Gilles Grunenwald. Image used with kind permission.	Photograph ©Gilles Grunenwald. Image used with kind permission.