Flora of tlie Malayan Peninsula. 143 



Leaves with narrow bases never pseudo-cor- 

 date : — 



Stem terete, scurfy ; leaves more or less 



oblanceolate, 1*35 to 4*5 in. long : flowers 



•4 in. long: calyx-lobes broad, ovate ... 18. A, ophirense. 



Stem angled, not scurfy : leaves lanceolate, 



2 to 3 in. long : calyx-lobes lanceolate, 



acuminate ... ... ... 19. A. Wrayi, 



Leaves glabrous except the midrib and nerves, 

 under surfaces glaucous : — 

 Leaves distinctly petiolate, ovate, or oblong- 

 lanceolate, unequal but not cordate at the base, 

 "75 to 1"35 in. long: calyx carapanulate ... 20. A, Hookeri. 



Leaves sessile or very nearly so, elliptic-oblong, 

 unequal and cordate at the base, 1"5 to 2*15 in. 

 long: calyx rotate ... ... ... 21. A.hicolor. 



1. Argostemma acuminatum, King n. sp. Glabrous except occa- 

 sionally for a few scattered minute pale hairs on both surfaces of the 

 leaves ; about 12 in. high. Stem erect, unbranohed, twice as thick as a 

 crow-quill when dry, obscurely 4-angled or minutely winged, naked. 

 Leaves crowded near the apex of the stem, thinly membranous when 

 dry, very unequal ; the larger of each pair oblong-lanceolate, sometimes 

 sub-oblique or sub-falcafce, the apex acuminate, gradually narrowed from 

 above the middle into a petiole of varying length ; both surface glab- 

 rous ; drying of a deep olivaceous colour, the midrib broad and rather 

 distinct and the 10 to 15 pairs of curved spreading nerves indistinct ; 

 length 35 to 6*5 in.; breadth 1 to 1-5 in.; petioles '1 to '4 in. ; the 

 smaller leaf of the pair sessile, sub-rotund, under '1 in. long. Stipules 

 usually with broad bases and acuminate apices about the same length 

 as the smaller leaf. Gymes terminal, about half as long as the leaves, 

 pedunculate, di- or tri-chotomous ; the peduncle and branches slender, 

 slightly swollen and bracteolate near the divisions. Flowers few, "3 in. long 

 on capillary pedicels longer than themselves and bracteolate at the base. 

 Calyx campanulate with 5 broad, blunt, spreading lobes. Corolla nearly 

 three times as long as the calyx, its lobes slightly shorter than the 

 staminal cone : anthers linear-lanceolate, acuminate, dehiscing longitudi- 

 nally, the connective forming narrow marginal wings and long flattened, 

 apical appendages. Style somewhat longer than the anthers : stigma 

 clavate. Capsules almost hemispheric, crowned by the ob.scurely toothed 

 cupular remains of the calyx, smooth, "15 in, iu diam. Seeds rather large 

 for the genus, angled, pitted, black. 



Penang: Wallich. Selangor: Ridley 823S. 



This plant was collected 65 years ago in Penang by Wallich, and until Mr. 

 Ridley obtained it in Selangor it does not appear to have been found since. In the 



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