Mr. J. Miers on the genus Streptosolen. 207 



upper moiety densely covered with long white hairs, which are 

 even persistent on the capsule ; the second will comprise such as 

 do not possess these characters, and is confined at present to a 

 single species : thus — 



§ 1 . EuBROWALLiA. Corollse limbus planus, rotatus, lobis bre- 

 vibus, eraarginatis ; ovarium cuneatum, apice obtusum, et dense 

 pilosum. 



1. Browallia demissa, Linn., DC. Prodr. x. 197. 



2. viscosa, H. B. K. ii. 373. 



3. tenella, n. sp. supra descript. 



4. nervosa, n. sp. ibid. 



5. peduncularis, Bth., DC. Prodr. x. 197. 



6. grandiflora, Grab. ibid. 



7. abbreviata, Bth. ibid. 



§ 2. Leiogyne. Corollse limbus profunde incisus, laciniis ob- 

 longis, acuminatis, 3-nerviis ; ovarium subglobosum, sessile, 

 omnino glaberrimum. 



8. Browallia speciosa, Hook. Bot. Mag. tab. 4339. The much 

 larger flowers of this species, its more acutely-lobed and deeper- 

 cleft border, and constantly smooth ovarium, are characters of 

 hardly sufficient importance to constitute a generic difference; 

 but at all events, with such marked distinctions, Leiogyne will 

 form a good subgenus. 



From the above enumeration B. Jamesoni has been excluded, 

 because it differs in its characters, in the number of divisions of 

 its calyx, in the shape of its corolla, the form and position of its 

 stamens, and the structure of its stigma. 



Streptosolen. 



I have already alluded to the propriety of excluding from 

 Browallia the species described under the name of B. Jamesoni, 

 as it possesses many essential characters at variance with that 

 genus. All the species of Browallia are herbaceous, while the 

 plant above mentioned is suffruticose, forming a branching shrub 

 4 or 6 feet high, with very rugous, coriaceous and scabrid leaves ; 

 the inflorescence is also more corymbose, and the structure of 

 the flower differs from that of Browallia in the following parti- 

 culars. The calycine tube is crowned with four, rarely with five 

 teeth ; the corolla is not hypocrateriform, and its tube, instead of 

 being slender and cylindrical, swells into a funnel-shape, imme- 

 diately as it emerges from the calyx, and the contracted basal 

 portion soon twists half a revolution, so that the border becomes 

 actually resupinate ; owing to the want of the contraction in the 

 throat, the border does not assume the figure of a rotate 5-lobed 



