ON SOUTH-AMEEICAN APOCTNACE.E. 165 



nearly bare of leaves above the base, densely foliiferous above the middle ; leaves approxi- 

 mate, erect, imbricate, acute at the base, acuminate, glabrous, with revolute margins, 

 1^ in. long, 1 J line broad, nearly sessile; raceme terminal, rather short, bearing about 3 

 flowers on a bare peduncle 1 in. long; pedicels with a lanceolate bract 2 lines long, 

 glabrous, 3-4 Hnes long ; sepals acutely lanceolate, 2 lines long ; tube of corolla slender, 

 7 lines long, slightly swollen at the mouth ; segments falcate, rotate, scarlet, 4 lines 

 long, 1^ line broad ; stamens placed within the mouth and inserted in the contraction 

 of the tube ; disk of 2 flat, semiorbicular lobes, as long as the 2 ovaries ; 2 terete, subto- 

 rulose follicles ; seeds 3 lines long, with a yellowish coma twice that length. 



4. HoMALADENiA PEDUNcuLARis, nob. : Diplttdenia peduncularis, A. DC. /. c. p. 482 : Dipladenia poly- 



morpha, var. peduncularis, Miill. I. c. p. 122 : Echites peduncularis, Stadelm. I. c. p. 54. In Brasilia, 

 prov. Minas Geraes : v. s. inflore in herb, meo (Claussen 252). 



Stems simple, scarcely 6 in. high, sparsely puberulous, slender, bare for a short distance 

 below, above crowded with leaves, which are erect, narrowly linear, acute at both ends, 

 margins revolute, hirto-pilose above, opake beneath, l^-lf in. long, ^ line broad, on 

 slender petioles \ line long ; peduncle axillary, slender, 1 5-25- in. long, bearing 3-4 flowers 

 on pedicels 6 lines long, each with a lanceolate bract 1 line long ; sepals lanceolate, erect, 

 imbricate, 2-2 j lines long ; slender tube of corolla 6 lines long ; narrow segments 2 lines 

 long ; disk of 2 broadish lobes, as long as the 2 ovaries ; follicles torulose, 3 in. long. 



5. HoMALADBNiA PUBERULA, nob. : Diplttdenia tenuifolia, var. puherula, A. DC. I. c. p. 482 : Dipladenia 



polyniQrpha, var. puherula, Miill. I. c. p. 121. In Brasilia, prov. Goyaz et Piauhy : v. s. in herb, 

 meo, Piaubjr (Gardner, 2329). 



A very dwarfish species, the rather stout, erect stems being only 3-6 in. high, glabrous, 

 very rugous, with 2 or 3 patent lateral branches 1-2 in. long, densely beset with imbri- 

 cate, narrow, acuminate, linear leaves with revolute margins, darkish above, yellowish 

 and pubescent beneath, 4-8 lines long, ^-^ line broad, on short, slender petioles ; peduncle 

 terminal, slender, puberulous, 1 J in. long, bearing 3 alternate flowers on pedicels 2 lines 

 long, with an acute basal bract ^ line long ; sepals lanceolate, 1 line long ; tube of corolla 

 slender, 5 lines long ; segments 4 lines long. 



This appears to me a peculiar and very distinct species. 



6. HoMALADENiA BREViFOLiA, nob. : Diplttdenia polymorpha, var. brevifolia, MiiU. L c. p. 122. In Brasilia, 



prov. Minas Geraes : non vidi. 

 Stems erect, simple, very short, densely foliiferous ; leaves broadly elliptic or oblong- 

 ovate, 5-12 lines long, 3-7 lines broad ; inflorescence on a very long peduncle. A species 

 widely differing from all others, and approaching the preceding. 



7. HoMALADENiA viNC^PLOEA, nob. : Diplttdenia vinccejlora. Van Houtte, Fl. Serres,, ii. p. 8, tab. 6 ; 



Walp. Rep. vi. 743 : Dipladenia polymorpha, \dx. peduncularis, Miill. I. a. p. 122. In prov. Minas 

 Geraes : non vidi. 



A species with a tuberous root, throwing out several erect, subbranching, low, slender 

 stems, having 2-4 minute subulate stipules at the axUs ; leaves extremely small, linear 



