150 oxxxiii. ORCHiDE^ (rolfe). [Angrcecum. 



46. A. caespitosum, Jiolfe. Stems very short, leafless, with tufts 

 of long flexuous roots. Racemes very short, tufted, f in. long, several- 

 flowered. Bracts small, triangular-ovate, acute, ^ lin. long. Pedicels 

 4-5 lin. long. Sepals ovate, subobtuse, membranous, with a green 

 keeled middle nerve, l|-2 lin. long. Petals similar but not keeled. 

 Lip with a spreading, ovate, subacute limb, 1-1 J lin. long; spur linear, 

 somewhat broader below, 4^ lin. long. Column stout IJ lin. long. 

 Capsule fusiform-oblong, slenderly pedicelled, 7-H lin. long. 



Upper Guinea. Cameroons : Efulen, on twigs of a fallen tree in the forest, 

 Bafes; 353 ! 



Allied to the Madagascar A. GilpincB, Reichb. f. and S. Moore. 



47. A. megalorrhizum, A'eicA6. /. Otia Bot. Hamh. ii. 117. Plant 

 leafless. Stem very short. Hoots very long, branched and verrucose, 

 sometimes over 1 ft. long. Racemes fascicled, slender, 3-5 in. long. 

 Bracts triangular, acute, | lin. long. Pedicels 1 J lin. long. Sepals and 

 petals oblong-lanceolate, subacute, 2^ lin. long. Lip 2| lin. long, ovate, 

 subobtuse or apiculate, slightly crenulate, narrowed at the base ; spur 

 narrowly conical, slightly curved, 1 J-2 lin. long ; apex slender. Column 

 nearly 1 lin. long, with deflexed, subulate rostellum. Capsule elliptic- 

 oblong, J in. long. 



IMEozaxnb.Sist. British Central Africa : Shire Valley, TTaZ/er .' Shibisa (Chik- 

 wawa), Shire River, Kirk ! Nyasaland, Buchanan, 1262 ! 



48. A. aphyllum. Thou. Orch. lies Afr. t. lo. Stem tall and 

 climbing, leafless, with numerous long flexuous roots. Racemes numerous, 

 f-1 in. -long, many-flowered. Bracts triangular-ovate from a broader 

 base, subacute, \-\ lin. long. Pedicels slender, 2J-3 lin. long. Flowers 

 white, becoming reddish in drying. Sepals and petals elliptical-oblong, 

 subobtuse, 1\ lin. long. Lip with a spj-eading triangular-oblong, sub- 

 obtuse, concave limb, | lin. long ; spur 2^ lin. long, strongly curved, 

 narrowed to the middle, broader at the apex. Column stout, 1 lin. long. 

 Capsule elliptic-oblong, slenderly pedicelled, 2J lin. long. — S. Moore 

 in Baker, Fl. Maurit. 358. Gussonia aphylla, A. Rich. Orch. Maurit. 

 76, t. 11, flg. 1; Ridl. in Journ. Linn. Soc. xxi. 492. Saccolahium 

 aphyllum, Lindl. Gen. & Sp. Orch. 223. Mystacidium aphyllum, 

 Burand k Schinz, Conspect. Fl. Afr. v. 51. 



irile Xiand. British East Africa : Mombasa, Kirk ! Giryama and Shimba 

 Hills, Taylor! 



Also found in Mauritius and Madagascar. 



18. LISTROSTACHYS, Reichb. f. in Bot. Zeit. 1852, 930. 



Sepals and petals subequal, free, spreading or subconnivent. Lip 

 affixed to the base of the column and continuous with it, produced at 

 the base into a long or sometimes very long spur ; side lobes small, or 

 obsolete, at the sides of the spur ; limb spreading or erect, entire or 

 obscurely trilobed. Column very short, broad, concave in front, without 



