ON SOTJTH-AMEEICAJST APOCTNACE^, 119 



style shortly bifid at the base, very slender above ; clavuncle oblong, cylindrical, incras- 

 sated, 5-grooved and nectariferous, somewhat fimbriated at its apex, having at its base 

 a broad umbracuhform appendage ; stigma of 2 short oval lobes at the apex ; 2 follicles, 

 straight, terete, suberect or horizontally divaricate, dehiscing along each ventral suture, 

 which is inwardly inflected along the margins, forming 2 linear coriaceous placentae ; 

 seeds numerous, fusiformly linear, compressed, with a small central hilum upon one 

 face, and having at the apex the long, peculiar, brush-shaped rostrum, as before 

 described ; the embryo imbedded in waxy albumen, is teretely cylindrical, with 2 cotyle- 

 dons many times shorter than the superior radicle, and nearly of the same thickness. 



The following appears to me a correct list of the genuine species, after the rejection of 

 some others enumerated by authors. 



1. Rhabdadenia Pohlii, Miill. Fl. Bras. t. c. p. 174, tab. 53. In Brasilia, prov. Rio de Janeiro : v. v. et 



sice, in herb, meo (n. 3437 et 4024) . Mage : v. s. in hb. Mus. Brit. Mage (Gardner 536) . I have not 

 seen its fruit, whicli is well depicted by Miiller. 



A low shrub, with slender twining branches, with opposite, spreading, acutely 

 lanceolate leaves, narrowly cordate at the base, 2f in. long, 7 lines broad, on a slender 

 petiole 3 lines long ; inflorescence lateral at each axil, on a very slender peduncle 

 3 in. long, bearing 2 slender pedicels 8 lines long, 2-bracteolate at their base, each sup- 

 porting a single purple flower ; sepals acutely linear, 3 J lines long, each with 8 acute 

 distinct scales subconnate at the base (not deficient according to Miiller) ; the con- 

 tracted portion of the tube of the corolla is 6 lines long, 1 line broad, suddenly swelling 

 into an almost cylindrical form, 1| in. long, 6 lines in diameter ; segments dolabriform, 

 9 lines long and broad, mucronate at the apex, simply convolute dextrorsely in aesti- 

 vation ; stamens inserted in the contracted portion of the tube ; anthers broadly bifid 

 and acute at the base ; disk of 5 erect, free, obtuse, oblong lobes, somewhat shorter than 

 the 2 free ovaries ; style slender, expanded at the apex into a thick, 5-grooved, 5-glandular 

 clavuncle, furnished at its base with a broad membranaceous umbraculiform appendage : 

 the 2 terete divergent follicles, as figured by Miiller, are 3f in. long, 2 lines thick ; seeds 

 9 lines long, with the addition of a brush-like rostrum of twice that length. 



2. Rhabdadenia paludosa, nob. : Echites paludosa, Vahl (non H. B. K., nee Don, nee Griseb.), Eelog. 



ii. p. 19, Icon. tab. 5 ; A. DC. I. c. p. 467. In Brasilia septentrionali (Van Robr) : v. s. in herb. 



meo, et Mm. Brit. Maranhao (Gardner 6060) . 

 Van Eohr collected plants in all the provinces of Guiana, including that of Brazil ; 

 and Maranhao naay be said to be within the same floral region. Gardner's specimen 

 weU accords, in every respect, with the good description and drawing of Vahl, taken 

 from Van Bohr's plant, and is unquestionably a Rhabdadenia. I have alluded to Grise- 

 bach's plant under the name of EcUtes jpaludosa Vahl, when describing Bhabdadenia 

 nervosa. Miiller wrongly refers Gardner's plant to Bhabdadenia biflora, certainly a very 



dififerent species. 



This is a small shrub, with erect, slender, virgate, striate branches, whose dilated 

 axils are l|-2 in. apart ; the opposite leaves are erect, lanceolate-oblong, acute at the 



