ON SOUTH-AMEEICAN APOCYNACE^. 163 



and raised by Veitcli. From its large flowers and long sepals, it approaches Dipladenia ; 

 but its climbing habit, the presence of subulate warty glands at the axillary nodes, the 

 twisted pedicels, the small size of the lobes of the disk, all prove that it really belongs 

 to Micradenia. It is described as a climbing shrub, everywhere glabrous, with axils 

 1^ in. apart, charged at the incrassate nodes on each face with 2 laciniate, subu- 

 late, diverging glands 2-3 lines long ; leaves opposite, eUiptic-ovate, cordate at the base, 

 shortly acuminate, submembranaceous, with divergent nerves and reticulated veins, 3^ 

 4 in. long, l^lf in. broad, on stoutish petioles 6 lines long ; raceme terminal, pendent, 

 6 in. long, bearing 8 alternate flowers, on bracteolate, spirally twisted pedicels 1 in. long ; 

 sepals lanceolate, subulate, erecto-patent, 9 lines long, each with an inner lanceolate 

 scale ; corolla large, its border spreading to a diameter of 4 in. ; tube 2J in. long, 

 whitish, narrowed cylindricaUy at the base for half its length, funnel-shaped above, 

 streaked deep red in the mouth ; segments rhomboidally dolabriform, with a long uncinate 

 acumen, of a deep rose-colour, dextrorsely convolute, expanded, 2 in. long, Ij in. broad ; 

 stamens seated at the constriction of the tube, cohering, glabrous ; disk of two fleshy, 

 flat, rounded lobes, less than half the length of the 2 oblong ovaries ; style slender, cla- 

 vuncle incrassate, 5-grooved, agglutinated to the anthers. 



12. Micradenia splendens, A. DC. I. c. p. 676 ; Miill. I. c. p. 130 : Echites splendens, Hook. Bolx 

 Mag. tab. 3976. In Brasilia, montib. Organ, et in caldario cult. : non vidi. 



A climbing species near M. acuminata, but with larger leaves ; probably it is only a 

 variety of it. It has terete, glabrous branches, with incrassate axils 8J in. apart ; leaves 

 elliptic, cordate at the base, acuminate, subcoriaceous, undulating on the margins, 

 glabrous above, with very numerous, divergent, parallel, immersed nerves, very pubescent 

 beneath, nerves prominent, 4-8 in long, 1 J-3 in. broad, on extremely short petioles ; 

 racemes axiUary, on a peduncle shorter than the leaves, bearing 4-6 large showy 

 flowers on pedicels bracteate at the base, 6-12 lines long ; sepals subulate, acuminate, 

 reflexed at the summit, 6 lines long ; tube of corolla white, glabrous, hairy within, nar- 

 rowly cylindrical for 6 lines, funnel-shaped above, 1-| in. long ; segments of a deep rose- 

 colour,, broadly dolabriform, uncinately toothed, 1| in. long and broad, all expanding to a 

 diameter of 4 in. ; stamens inserted at the constriction of the tube ; anthers shortly and 

 obtusely 2-lobed at the base ; disk of 2 rounded emarginate lobes one third the length of 

 the 2 ovaries. 



HOMALADENIA. 



A very distinct group of plants, placed by Prof. DeOandoUe in Dipladenia ; but they 

 differ in their habit, in their short erect stems densely covered above with pine-like 

 leaves, terminal flowers with a smallish hypocrateriform corolla, with a narrow cylindri- 

 cal tube and a rotate border ; stamens included within the mouth of the tube ; anthers 

 shortly cordate at the base ; disk of 2 pvate glands as long as the ovaries ; seeds with 

 a double coma, the inner hairs twice the length of the seeds, — characters quite at variance 



with those of Dipladenia. 



t2 



