PLEUEOTHALLIS 65 



Dendrobium lanceola Siv. in Nov. Act. Upsal. vi. 83 (1799), Fl. 

 Ind. Occ. 1539 & Adnot. Bot. t. 2, /. 5. Type in Herb. Mus. Brit. 



On trees and stones ; in fl. and fr. Oct. -Feb. ; mountains, Swartz ! 

 St. George, J.P. 171, 231, Morrisl Mt. Moses, 3800 ft., J.P. 2091, Syme\ 

 St. George, Portland, 2500 ft. ; near Mabess River, 3000-1000 ft. ; near 

 Jobn Crow Peak ; Harris ! Fl. Jam. 7467, 7520, 7742, 10,479. 



Plant 1J to 2 J in. bigb. Stems generally 1-1 J cm. 1., sometimes 

 sborter, enveloped in scarious sbeatbs, filiform. Leaf 3-4 cm. 1., 3-3*5 

 mm. br., narrowing gradually below into a distinct stalk, linear-lanceolate, 

 sbortly apiculate, margins revolute wben dry, midrib prominent on tbe 

 under side. Pedicels *5 cm. 1. Bracts about 1*5 mm. 1., sbeatbing, 

 truncate. Flowers nearly J in. 1., orange or scarlet. Sepals 5-6*5 

 mm. 1., lanceolate, obtuse, 3-nerved, keeled, spreading at apex, lateral 

 connate at tbe base, gibbous. Petals 2*5 mm. 1., nearly balf as long as 

 tbe sepals, oblong-spatbulate, witb 1-2 nerves, prominent. Lip, as long as 

 tbe petals, oblanceolate, 3-nerved, reflexed about tbe middle, witb undulate 

 margin tbere. Column scarcely sborter tban tbe petals, winged ; clinan- 

 drium, margin crenulate. Capsule *5 cm. 1., ellipsoidal to obovoid. 



24. P. sertularioides Spreng. Syst. Hi. 731 (1826) ; stems 

 very short, from creeping rhizome ; leaf narrowly oval, oval- 

 oblong or linear-spathulate, narrowed into the stalk ; sepals 

 straw-coloured or greenish, membranous, lanceolate, acuminate, 

 lateral shortly connate, slightly gibbous. Lindl. Fol. Orch. 

 Pleurotk. 42 ; Griseb. op. cit. 609 ; Cogn. op. cit. 426. Epiden- 

 drum sertularioides Sic. Prodr. 122 (1788). Dendrobium ser- 

 tularioides Sw. in Noc. Act. Upsal. vi. 83 (1799) k, Fl. Ind. Occ. 

 1541. Type in Herb. Mus. Brit. 



On trees; in fl. and fr. Jan., Feb.; mountains, Swartz ! Beaufort, 

 Wullschlaegel, 1081 (in part) ! below Vinegar Hill Gap, Portland, J.P. 

 2039, Campbell ! near Mabess River, Faiccett ! Belvedere, Hanover, 500 ft. ; 

 Troy, 1600 ft. ; Harris ! Walderston, Mrs. Longstaffl Fl. Jam. 7569, 10,446, 

 10,487. Cuba, Trinidad. 



Plant barely an incb bigb. Rhizome less tban 1 mm. br., slender, 

 creeping, ringed, rooting at tbe nodes, covered witb membranous sbeatbs. 

 Stems less tban 5 mm. 1., from 5 to 10 mm. apart, generally springing 

 from alternate nodes or every tbird node of tbe rbizome, enclosed by 

 sbeatbs. Leaf 1*5-2*5 cm. 1. Peduncles solitary, capillary, scarcely as 

 long as tbe leaf, 1-rarely 2-flowered, witb a sbort, truncate, 2-dentate, 

 spatbaceous bract at tbe base and above tbe middle, sometimes witb 3 

 bracts ; occasionally tbe peduncles of two preceding flowering seasons 

 persist. Bracts barely exceeding 1 mm. 1. Flowers about ^ in. L, straw- 

 coloured or ligbt green. Sepals about 4 mm. 1., 1 mm. br., 1 -nerved. Petals 

 3 mm. 1., *7mm. br., linear-lanceolate, acuminate, 1-nerved. Lip 2*4-2*75 

 mm. 1., *4-*75 mm. br., sessile, witb minute square auricles at base, 

 linear-lanceolate, margin undulate, denticulate about midway, recurved 

 above. Column 1*5 mm. 1., witb a membranous wing. Capsule ellip- 

 soidal, 3-keeled, about 9 mm. 1. 



25. P. mierolepanthes Griseb. op. cit. 610; plant not more 

 than |- in. high ; stems clustered, shorter than the leaf ; 

 sheaths with mouth dilated, margined and ciliate ; peduncle half 

 as long as leaf ; sepals yellow in drying, lateral connate nearly 

 to apex. Cogn. op. cit. 430. 



F 



