ON SOUTH-AMEEICAN APOCYNACE^. 259 



sepals acute, 3 lines long, rigidly puberulous ; tube of corolla scarcely swelling above, 

 12 lines long ; segments 6 lines long. 



10. HjEmadictyon tomentelltjm, Benth. Bot. Sulph. p. 126. In Guayaquil (Hartweg 670) : non vidi. 



A slender species, near the preceding, witb glabrous or obsoletely glauco-tomentellous 

 branches ; leaves ovate-oblong, cordate at tbe base, shortly acuminate, glabrous or 

 minutely birtellous above, nerves scarcely visible, densely glauco-tomentose beneath, 

 (size not given) ; raceme solitary and lateral at the nodes, shorter than the leaves, on a 

 peduncle scarcely longer than the petioles, angular, minutely hirtellous, bearing several 

 subaggregate flowers on pedicels shorter than the calyx; sepals lanceolate-acuminate, 

 unequal, 5-6 lines long, with a broad short inner scale ; tube of corolla cylindrical, 1 in. 

 long, constricted above, with an annular ring in the mouth, the appendages extending a 

 little beyond it ; segments large, expanded ; stamens seated in the middle of the tube, 

 on slender filaments ; anthers acuminate, scarcely exserted, with 2 long basal prongs ; 

 follicles 2, tomentellous, 4-6 in. long ; seeds oblong, triquetrous, with a copious longer 

 coma. 



11. HjEMadictyon pallidum, a. DC. I.e. p. 428: Echites annularis'^, Pavon MSS. (uon Linn.). In 

 Peruvia : non vidi. 



A glabrous species, of which little is known. Its leaves are ovate-oblong, cordate at 

 the base, acute, pallid, opake, 3 in. long, 1^ in. broad, on petioles 5 lines long ; raceme 

 shorter than the leaves ; peduncle 1^ in. long, bearing several flowers on pedicels 4 lines 

 long, supported by acute bracteoles 3 lines long ; sepals oblong-obovate, subvelutinous, 

 about 6 lines long, with an acutely ovate inner scale ; tube of corolla yellow, cylindrical, 

 14 lines long, narrower at the throat, with segments 9 lines long ; stamens seated in the 

 upper portion of the tube ; anthers hirtous behind, sagittate at the base, the appendages 

 below the throat 2 lines long, pilose ; disk of 5 obtuse lobes half as long as the ovaries. 



12. H^MADicTYON CALYCiNUM, Lindl. (scc. Benth.) : Hcemadictyon Gaudichaudii, MiiU. in parte (non 

 A. DC.) /. c. p. 168. In Brasilia, Rio Negro : v. s. in herb, meo, Barra do Bio Negro (Spruce 1882). 



A handsome and peculiar species, very distinct from S. Qaudichaudii, which Miiller 

 probably did not see. It is a climbing plant, its branches being slender, pale, glabrous, 

 angularly sulcate, verruculous, with dilated axils 9 in. apart, having a proniinent cre- 

 nulate ridge across the nodes ; the leaves are elliptic-oblong, obtuse at the base, with a 

 shortish, subreflexed, acute acumen, chartaceous, glabrous, green above, with about 

 10 pairs of fine prominulent divaricating nerves arcuately conjoined, pale yellow beneath, 

 with prominent reddish midrib, nerves, and reticulate veins, 5-5f in. long, 2;^2^ in. 

 broad, on corrugated petioles 3 lines long ; raceme solitary and lateral at the nodes, 

 3-3^ in. long ; peduncle bare at the base for 1| in., bearing above about 10 alternate 

 lax flowers on subreflexed slender pedicels 6-8 lines long, minutely bracteolate, all very 

 glabrous ; sepals acutely oblong, subacuminate, 5 lines long, 2 lines broad, submembra- 

 naceous, rugulous at the base, with a broad reddish pluridenticulate inner scale ; corolla 

 and other parts as usual. 



2l2 



