O28. 
PL. CCCXIII. 
SACCOLABIUM HENDERSONIANUM rcus. F. 
Mr HENDERSON'S SACCOLABIUM. 
SACCOLABIUM. Sepala subaequalia, libera, patentia v. erecto-patentia, plana v. concava, lateralia interdum 
basi parum latiora, posticum interdum fere cucullatum. Petala sepalis subsimilia, interdum latiora, rarius angustiora. 
Labellum ad basin columnae sessile, basi calcaratum v. saccatum, calcare descendente recto v. rarius recurvo intus 
nudo; lobi laterales ad latera calcaris erecti, saepius parvi, interdum latiusculi v. vix’ prominentes, medius patens v. 
erectus, polymorphus, nunc parvus dentiformis, nunc oblongus linguiformis v. transverse dilatatus, rarius calcare 
longior; discus ad os calcaris interdum lamina parva appendiculatus. Columna brevis, lata, nunc brevissima, apoda, 
exalata v. angulis parum prominulis; clinandrium parum prominens, truncatum, Anthera terminalis, opercularis, 
incumbens, convexa, antice saepius obtuse acuminata, unilocularis v. imperfecte bilocularis; pollinia 2, subglobosa, 
integra sulcata v. bipartita, inappendiculata, anthera dehiscente stipiti lineari v. tenui affixa, glandula saepius parva. 
Capsula saepius oblonga, rarius elongata, interdum globosa v. ovoidea, erostris, costis tenuibus v. prominulis, 
Herbae epiphyticae, caulibus foliatis non pseudobulbosis. Folia disticha, patentia, coriacea, carnosa v. rarius 
Ped 
tenuia, plana v. rarius teretia, vaginis persistentibus caulem obtegentibus. I li laterales simplices v. ramosi. 
Flores nunc majusculi, minores tamen quam in Vanda, racemum densum speciosum recurvum formantes, nunc 
dissiti v. parvi, v. in racemo tenui simplici v. paniculato-ramoso minimi, breviter pedicellati. Bracteae parvae. 
Species circa 40, Indiae orientalis et Archipelagi Malayani incolae, 
Saccolabium BiuMeE, Bijdr. Fl. Nederl, Ind. (1825), p. 292. — BENTH. et Hook. ¥F. Gen. Plant., III, p. 578. 
Saccolabium Hendersoni Caulis brevissimus. Folia disticha, ligulata, apice emarginato-bidentata v. integra, 
carnosa, carinata. Racemus erectus, multiflorus, breviter pedunculatus. Bracteae parvae, lato-triangulares. Flores 
parvi, rosei. Sepalum posticum orbiculatum, concavum; lateralia longiora, late obovato-oblonga. Petala obovata, 
sepalo postico paullo minora. Labellum fere ad calcar cylindraceum compressum pallidum rectum obtusum reductum, 
ore tridentatum v. tricuspidatum, laciniis lateralibus angulatis minutis, lacinia media minuta. Columna brevissima. 
Saccolabium Hendersonianum Reus. ¥F. in Gard. Chron., 1875, pt. 2, p. 350. — Bot. Mag., t. 6222. — WARN. 
et WILL. Orchid Album, VI, t. 275. — VEITCH Man. Orch. Pl., pt. VII, pp. 115, 116, cum xyl. 
it had been known for two or sees years as the new Bornean Saccolabium. 
From the Botanical Magazine, however, where it was figured shortly afterwards, 
we learn that the species had been known in Europe ever since the year 1862. 
Curtis has since gathered it in north-west Borneo, and states that it prefers the 
neighbourhood of rivers and streams, where it grows on trees of Lagerstroemia 
indica, generally in partial shade, but sometimes fully exposed. In its native 
home, it flowers very freely, and one of the prettiest floral sights he met with 
in that region was a dead leafless tree, overhanging a stream, covered with Sacco- 
labium Hendersonianum in full bloom. 
It is nearly allied to S. vosewm LinvL., a native of Ceylon, which agrees 
with the present species in having rosy flowers, with a lip almost reduced to an 
elongated compressed spur, the three lobes being excessively reduced, and the 
