Hoya.] LXXX. ASCLEPIADE^. 1013 



spreading to ^in. diameter, broadly 5-lobed, the upper surface nearly smooth 

 and glabrous except towards the edges which are slightly papillose and not 

 reflexed. Corona-segments expanded into concave (at first almost cup-shaped) 

 horizontally spreading lamina', very obtuse on the outer margin, the inner 

 margin acuminate and incurved, the back prominently 2-keeled. — H. car'nom ?, 

 E. Br. Prod. 460 (as to the Australian plant) ; H. bicarinata, A. Gray in Proc. 

 Amer. Acad. Sc. v. 335 ; H. Dalrymplianu, F. v. M. Rep. Burdek. Exped. 16 • 

 Bot. Mag. 5820. 



Hab.: Endeavour Biver, Banks and Solander, R. Brown; Port Deniaon, Fitzalan; Boelc- 

 hampton, Eookingham and Edgecombe Bays, Dallachy ; Brisbane Biver, Moreton Bay, 

 Backhouse, F. v. Mueller ; Ugly CreeV, G. Stuart. 



Considered very poisonous to sheep. 



4. H. Nicholsonise (after Lady Nicholson), F,, f. M. Fragm. v. 159 ; 

 Benth. Fl. Austr. iv. 847. A glabrous succulent epiphyte clinging to the 

 trunks of trees, the branches often twining and emitting fibres not confined 

 to the nodes. Leaves ovate or elliptical, acuminate, contracted into a rather 

 j^short petiole, thick and fleshy, very obliquely penniveined and 8-nerved at the 

 ''base or almost quintuplinerved, 2 to Sin. long or when luxuriant above 4in. 

 Flowers yellow, rather numerous in the umbel, the pedicels ^ to fin. long. 

 Corolla if spread open nearly ^in. diameter, deeply lobed, quite glabrous, the 

 lobes acute and curved over the gynostegium. Corona-segments expanded into 

 ovate slightly concave disks, the outer margin almost acute, the inner margin 

 very broad short and obtuse, the back with 2 broadly-prominent involute keels, 



Hab.: Bockingham Bay, Dallachy ; not uncommon in the tropics. 



16. DISCHIDIA, R. Br. 



(Corona-segments bifid.) 



Corolla ureeolate ; lobes 5, spreading, valvate in the bud. Corona of 5 

 segments attached to the base of the gynostegium, erect, linear, and bifid at 

 the end. Anthers terminated by a membrane. Pollen-masses 2 to each anther, 

 oblong, erect. Stigma obtuse. — Herbs usually creeping over the stems of trees 

 and rooting at the nodes. Leaves fleshy, some of them often converted into 

 pitchers. Flowers small, in axillary or interpetiolar umbels or clusters. 



The genus is spread over East India, and more especially the Indian Archipelago, where the 

 Australian species are also found. 



Without pitchers. 



Leaves thick, nearly orbicular, mealy-white, about Jin. diameter . . . 1. D.nummularia. 



Leaves fleshy, ovate, apiculate, more or less variegated on the upper side 2. D. ovata. 

 Bearing pitchers. Leaves ovate or orbicular, fleshy, upper side convex, 



under side somewhat concave S. D timorensis. 



Bearing pitchers in great quantities. Leaves orbicular, lin. diameter . . A. D. Eafflesiana. 



1. I>. nummularia (shape of a piece of coin), E. Br. Prod. 461; Benth. 

 Fl. Austr. iv. 345. A succulent milky-juiced epiphyte more or less mealy-white, 

 the slender stems creeping over the trunks and branches of trees, rooting at the 

 nodes, and apparently attaching themselves by means of disk-like expansions of 

 the fibres, the upper branches loose and hanging. Leaves on very short petioles, 

 nearly orbicular, thick and fleshy, not exceeding ^in. diameter. Flowers very 

 small, in little sessile axillary or interpetiolar clusters, the pedicels very short. 

 Calyx-segments minute. Corolla under 1| line long, the tube inflated, the 

 lobes narrow, longer than the tube. Corona-segments as long as the gynos- 

 tegium, at first erect, incurved, with short subulate inflected lobes, at length 



