N EOF II Y TON. 73 



tost, scouleri Lind. bot. reg. 1277. Suftruti- 

 cose, leaves cuneate serrate, upper linear ob- 

 tuse entire, flowers subracemose secund Ori- 

 gon, large purple flowers. Akin to Dasanthe- 

 ra fruticosa 397. 



411. APENTOSTERA TRIFLORA Raf. Chelone! 

 nemorosa Lind. bot. reg. 1211. Herbaceous, 

 leaves ovate acum. serrate, upper amplex. cor- 

 date, peduncles axiHary triflore Origon, quite 

 similar to the last in the structure of flowers, 

 yet put into a different Genus by Lindley ! 



412. LEPTEIR1S Raf. (minute sterile) 

 calix 5parted, corolla tubulose incurved beard- 

 ed inside, limb 51obed subcqual. A minute ru- 

 diment of a fifth sterile stamen. Leaves oppos. 

 narrow, flowers glomerate verticillate whitish 

 another and nearer link to Pentostemon, dis- 

 tinct from it by corolla and habit quite pecu- 

 liar : akin to Russelia and Pagesia. 



413. LEPTEIRIS PARVIFLORA Raf. Pentoste- 

 mon micranthum Nut. cat. 83. Smooth, leaves 

 linear lanceol. acute entire subamplex. flowers 

 spicate paniculate glomerate in whorls, seg- 

 ments of calix lanceolate Origon, stem slen- 

 der pedal, seen dry, collected by Wyeth. 



I must end here this long survey of the Gen- 

 era akin to Gerardia, without attempting yet 

 all those akin to Pentostemon. They are fur- 

 ther removed from Digitalis to which Nuttal 

 compared them. Thus we have already 12 Gen- 

 era and 40 sp. of plants akin to Gerardia or once 

 added thereto, many of which are quite rare 

 plants seldom seen by our botanists ; some are 

 beautiful and yet hardly known in Gardens, 

 There must be others in the Missouri and Ori- 

 gon regions. It is a fact that in this tribe the 

 colors of flowers indicate Genera ! I have not 



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