122 ORCHIDS OF JAMAICA 



Dedicated to Prof. Dr. Ignatius Urban in recognition 

 especially of his work on the botany of the West Indies. 

 Species 1, a native of Jamaica and Cul^a. 



N, adendrobium jPaicc. dt Bendle in Journ. Bot. xlvii. 125 (1909). 

 Ponera adendrobium Beichb. f. in Flora xlviii. 278 (1865) ; 

 under Pleuranthium Benth. & Hook.f. Gen. PL Hi. 526 (1883); 

 Camaridium parviflorum Fawc. in Symh. Ant. i. 472 (1900). (PI. 24.) 



In fl. and fr. Sept.-March; near Cedar Hurst (higli up on trees), 

 J.P. 480, Morris 1 Lancaster, 2500 ft. (on stony banks under shade) ; Harris ! 

 Fl. Jam. 7650, 7696, 7874.— Cuba. 



Plant several feet in length ; internodes 2-4 cm. 1. Leaves linear- 

 lanceolate, subacuminate, 12-15 cm. L, 2 cm. br. Peduncle 7 mm. 1. 

 Pedicel 7*5 mm. 1. Bracts scarious, the one subtending the cluster, 

 1 • 1 cm. 1. ; that at the base of the peduncle 1 cm. 1. ; that at the base of 

 the pedicel 8 mm. 1. ; bracteole below the ovary 1 • 3 mm. 1. Ovary 8 mm. 1. 

 Flowers white, perianth about ^ in. 1. Sepals 5*5 mm. 1., subacuminate, 

 median oblong, lateral oblong-elliptical. Petals 5 mm. 1., oblong, acumi- 

 nate, 3-nerved. Lip middle lobe, 3 mm. 1., nearly 3 mm. br., margin 

 undulate, apex emarginate ; disk at the base with two calli, 1-nerved, at 

 the back 3-nerved, callose at the base, and with a thick apiculus below 

 the apex. Column 2 mm. 1. ; foot 2 mm. 1. Capsule (unripe) 1*6 cm. 1., 

 with slightly prominent ribs. 



50. ORNITHIDIUM Salisb. 



Epiphytic herbs. Stems leafy, covered with overlapping 

 sheaths in two ranks, and emitting here and there lateral or sub- 

 lateral 1-2-leaved pseudobulbs. Leaves thinly leathery, in 

 O. vestitum only from pseudobulb, elongate, in 0. proliferum short, 

 those from stem, in two ranks, jointed with the sheath. 

 Peduncles 1 -flowered, clustered at the axils. Flowers small. 

 Sepals about equal, free, erect or spreading, acute, the lateral 

 scarcely forming at the base a very short chin. Petals similar 

 to the sepals but smaller. Lip sometimes erect from the base of 

 the column with which it is continuous or very shortly connate, 

 sometimes attached at the apex of the very short foot, erect 

 from a claw which is very shortly horizontal ; lateral lobes erect, 

 parallel, often embracing the column, the median spreading, 

 undivided. Column short or a little elongated, thick, without a 

 foot or with a very short foot, not winged ; clinandrium obliquely 

 truncate. Anther terminal, opercular, incumbent, helmet-like, 

 imperfectly 2-celled ; pollinia 4, waxy, ovoid, sometimes free, 

 sometimes attached to a linear stalk, with a small gland. 

 Capsule oblong-ellipsoidal. 



Species about 44, natives of tropical America from the West 

 Indies and Mexico to Brazil. 



Leaves, one on each pseudobulb, none on stem 1. O. vestitum. 



Leaves, two on each pseudobulb, in two ranks on stem 2. O. proliferum. 



1. 0. vestitum Beichb. f. in Walp. Ann. Bot. vi. 491 (1863) ; 

 Griseb.Fl. Br. W. Ind. 625 ; Cogn. in Fl Bras, iii.pt. 6, 95 (in part). 



