OKCHIDS OF MADAGASCAR. 485 



Imerina, Beans Cowan I in Herb. Brit. Mus. 



This plant has a stem G inches long, covered with the old leaf- 

 sheaths, and bearing 4 or 5 narrow, linear, blunt leaves at the top. 

 The leaves are 3-3£ inches long, ± inch across. The petals, sepals, 

 and lip are all very similar in shape, the lip being the broadest ; 

 they are ovate-lanceolate and hardly expanded. 



AtfGKJECUM clavigeeum, n. sp. ; caule brevi radicante ; foliis 

 lanceolatis obtusis, imequaliter bilobis,carnosis uncialibus; floribus 

 singulis albis mediocribus, in pedunculis gracilibus suberectis 

 uncialibus e medio internodii orientibus, vaginis tribus ovatis 

 parvis ; sepalis lanceolatis acuminatis acutis ; petalis subsimilibus 

 brevioribus latioribus ; labello petalis suba?quali, ovato-lanceo- 

 lato piano, carina media ; calcare brevi, ovario subaequali, pen- 

 dulo clavato, apice curvo ; columna brevi crassa; lobis rostelli 

 foliaceis erectis obtusis ; anthera depressa operculari ; polliniis 

 parvis, caudicula brevi, glandula angusta lineari quam caudicula 

 longiore ; ovario brevi curvo, |-uuciali. 



Imerina, Aukafana, Deans Cowan ! ; Ankafaua, Hildcbrandt, 

 Mar. 1, 1881, no. 3978 ! in Herb. Brit. Mus. 



A small plant with much of the habit of A. pectination, creep- 

 ing on the bark of trees and emitting copious and long roots. 

 The leaves are thick and fleshy, oblong lanceolate, blunt and 

 unequally bilobed, 1 inch long by \ in diameter. The flowers 

 are solitary on slender peduncles, springing from the lower part 

 of an internode and not from the axil of a leaf They are about 

 the size of those of A. cucvllatuni, Thouars, white with a green 

 centre. The petals and sepals are rather thin in texture and 

 hardly spreading ; the petals are 6, the sepals 8 lines in length. 

 The lip is similar in shape and about as long as the petals, but a 

 little broader ; the median line is pinched up so as to form a 

 central ridge. The spur is about | of an inch long, hanging 

 vertically down ; it is club-shaped, with the end turned up. The 

 stigma is rather broad ; the anther flat and rather small. The 

 pollioia are supported on a straight short pedicel and a longer 

 narrow gland. 



A. rostratum, n. sp. ; rhizomate longo lignoso gracili ; 

 radicibus multis gracilibus; foliis copiosis alternis lanceolatis 

 obtusis carnosis, vaginis (siccis) transversim rugosis ; floribus 

 singulis in axillis foliorum superiorum, viridibus mediocribus, 

 pedicello |-unciali gracillimo ; sepalis late linearibus obtusis 

 carnosis ; petalis linearibus lanceolatis, b:isi dilatatis, obtusis 



