Mr. J. Miers on the genus Brachistus, 267 



The larger leaves are 5 inches long and 2 inches broad, on a 

 petiole of 4 lines ; the smaller leaves measure 2~ inches long and 

 1^ inch broad, on a petiole of 3 lines ; the peduncles are from 4 

 to 6 lines long ; the calyx urceolate, 1 line long ; the tube of the 

 corolla 3 lines, its segments 2 lines long*. 



10. Brachistus dimorphus (n. sp.) ; — fruticosus, ramulis teretibus, 

 glaberrimis ; foliis elongato-lanceolatis, apice acuminatissimis, 

 basi oblique in petiolum attenuatis, adultis utrinque glabris, 

 supra ad rachin scabrido-pilosis, margine subciliatis, junioribus 

 sparse pilosis, geminis, difformibus, altero multo minori, ro- 

 tundato-ovato, sessili, basi insequali, supra glabro, subtus pal- 

 lide fulvescente ; iloribus pentameris binis, extra-axillaribus, 

 eernuis, petiolo brevioribus ; calyce m-ceolato, fere iutegro, 

 piibescente ; corollse tubo brevissimo, limbo 5-partito, expanso, 

 lobis acutis ; filamentis subulatis, compressis, glabris ; antheris 

 oblongis ; stylo exserto, subincurvo ; stigmate clavato, sub-2- 

 lobo. — Nova Granada, v. s. in herb. Hook. (Los Tapios, Quin- 

 diu, Goudot.) 



This species is very distinct, its larger leaves being so extremely 

 different in form from the others ; they are 3^-3 1- inches long, 

 I inch wide, on a petiole barely ~ inch in length, the smaller 

 geminate leaf being 10 lines long and 7 lines broad ; the peduncle 

 is scarcely 2 lines, and the corolla 2 lines in length ; the calyx 

 is 1 line long and in diameter, submembranaceous, without ner- 

 vures, and with five obsolete teeth on its almost entire margin f. 



11. Brachistus t lancecefolius (n. sp.) ; — ramis ferrugineo-tomen- 

 tosis, dichotomis, ramulis angnlatis, divaricatim flexuosis, vix 

 ligneis ; foliis alternis, lanceolatis, utrinque acuminatis, iute- 

 gris, supra parce, subtus densius fulvo-puberulis, petiolo sub- 

 brevi ; Iloribus e dichotomiis solitariis, vel e turionibus fasci- 

 cnlatis ; pedunculis 1-4, unifloris, pilosis, apice incrassato- 

 incurvis ; calyce piloso brevi, urceolato, angulato, margine fere 

 integro, dentibus 5 minimis instructo; corolla rotata, sub- 

 glabra, limbo 5-lobo, lobis acutis, triangularibus, reflexis, mar- 

 gine floccosis ; staminibus inclusis, erectis, glabris ; stylo apice 

 incrassato, stigmate capitato-bilobo. — America sequinoctialis, 

 V. s. in herb. Hook. (Loxa, regno Quitensi, Seemann, p. 879.) — 

 (Vita, Peruvise, McLean.) 



This is a plant very distinct from the others, with very dicho- 

 tomously spreading branches, which have a more medullary and 

 less ligneous substance : there is no indication of fruit in the spe- 



* This species is represented in Plate 37 A. of the ' Illiistr. South Amer. 

 IMatits.' 



t A (h-;uviiig of this species is shown in Plate 37 B. of tlie ' lihistr. South 

 Anier. Plants.' 



