564 Flora of the Malayan Peninsula. 



and smooth puberulous bark. Leaves very thick, fleshy ; oblong, 

 rounded or emarginate and usually apiculate at apex, rounded or cordate 

 at base ; both surfaces shining, glabrous except on the midrib ; margins 

 recurved ; 4 to 6 in. long, 2 to 3 in. broad ; midrib very thick, chan- 

 nelled and pubescent above, raised and glabrous or puberulous beneath ; 

 nerves visible only when dry and then main nerves seen to be nearly 

 horizontal, about 10 to 12 pairs, soon branching ; petiole very thick, 

 •5 to 1 in. long, puberulous. Umbels many -flowered, racemose, on thick 

 tubercular rachises -5 to '75 in. long and up to about 4 in. in diam., at 

 the ends of thick 1 to 3 in. long puberulous peduncles which are ap- 

 parently lateral ; pedicels rather thick, 1 to 1*5 in. long, puberulous, 

 slightly enlarged below the calyx and dotted ; buds 5-angled, 

 acute at tip, 4 in. long ; flowers dull yellow. Calyx fleshy ; lobes 

 linear-oblong, obtuse, recurved, -15 in. long, dotted and pubescent with- 

 out. Corolla nearly 1 in. in diam. when open, pubescent without, 

 glabrous within ; lobes ovate-cordate-acuminate, generally erect, -4 in. 

 long. Corona of 5 processes ; the lower lobe suberect, obtuse, inflated, 

 concave above and channelled beneath; the upper erect, longer than 

 the anthers, acuminate. Staminal-column short ; anther-cells parallel 

 with small divergent wings below ; appendages membranous, erect, 

 acute; pollen-masses oblong, rounded, thin on the outer margin, 

 attached by rather long curved caudicles to the rather large conical 

 pollen- carriers. Style-apex obscurely 5-angled, obconical, long-apiculate. 

 Fruit not known. Wall. Cat. 8167 ; Dene, in DC. Prodr. VIII. 638 ; 

 Hook. f. Fl. Br. Ind. IV. 58. H. Teysmanniana, Miq. El. Ind. Bat. II. 

 522. 



Penang: ? WalUch 8167. Peeak: Scortechmi. Pahang: Bidley 

 2732. Singapore : at Serangoon, on mangrove trees, Bidley 8932. — 

 DisTRiB. Tenasserim or Andaman Islands {Heifer 3790), Sumatra 

 {Teysmann 1170), Java. 



The colour of the flowers seems to be a little in doubt. Teysmann gives it as 

 " white," the Fl. Br. Ind. says " dull yellow," Kidley says " white with a red centre." 

 It would seem therefore probable that the corolla is white turning yellow and the 

 corona red. 



5. HoYA iMPEEiALis, Lindl. in Bot. Eeg. (1846) under t. 68, mz note, and 

 in Journ. Hort. Soc. V. 80 ^vith woodcut (1850). A stout climbing shrub, 

 rooting on trees and probably epiphytic ; branches rounded, dark green, 

 puberulous, puncticulate and with papery bark when dry, reaching -5 in. 

 in diam. Leaves fleshy or coriaceous, membranous when dry; elliptic 

 or elliptic-oblong, obtuse or shortly acuminate or apiculate at apex, 

 rounded at base or slightly cordate ; both surfaces shining when dry, 



