OF ARTS AND SCIENCES. 91 



glandulnsis pubascens, 1-2-pedale ; rauiis gracilibus subflexiiosis ; foliis 

 membraiiaceis ovatis seu ovato-obloQgis petiolatis basi subcordatis vel 

 subctineatis nunc integris nunc lobis lateralibus utrinque auriculatis ; 

 cymis umbelliformibus primum terminalibus pauci-plurifloris nunc 

 fui'catis ; pedicellis filiformibus ; corolla violacea plano-rofata angulato- 

 subquinqueloba pollicem diametro ; calyce 5-lobo, fructifero erecto sub 

 bacca ([)urpurea?) globosa modice ampliato. — California, through the 

 southern and eastern parts of the State, but extending to Sierra 

 County, J. G. LemmoD, and to Nevada, near Carson, Anderson. It is 

 named in honor of L. I. Xantus, one of the earlier collectors of the 

 species. This has been confounded with S. umbelliferum, Dr. Bige- 

 low's specimen from Cocomungo having been referred to that species 

 by Torrey in the Botany of Whipple's Expedition, as was that of 

 Anderson from Nevada, by Watson in King's Expedition. Besides 

 other marks, the pubescence is notably different (but sometimes almost 

 wanting), consisting of simple and few-jointed hairs, some of which 

 are glandular. It is so variable in foliage that the following plant is 

 probably referable to it. 



■^ Var. Wallacei. Majus; ramis junioribus pedunculisque pilis longis 

 pluri-articulatis viscidis villosis ; eyma furcata ampliore ; corolla ses- 

 quipollicem diametro Ifete violacea. — Island of Catalina, off San 

 Pedro, California, Wallace. No. 5>86 of Coulter's Californian eollec 

 tion, of which my specimen wants the flowers, and which is glabrous 

 and has cordate leaves, may be a form of this. 



SoLANUM UMBELLiFKRUM Esch. This Variable species abounds 

 around San Francisco and in all that part of California. Eschscholtz 

 described a form with ovate acute leaves, but they are more commonly 

 obtuse, and the smaller ones inclined to obovate. S. Californicuni of 

 Duual is this ordinary form, and S. genistoides a depauperate and 

 small-leaved summer state of the same. The species is well marked 

 by the somewhat furfuraceous or tomentose pubescence, which, under 

 a lens, is seen to be composed of repeatedly branching hairs. 



COLLINSIA Nutt. This genus is exceedingly well marked, but 

 the species are difficult of discrimination. Eleven species may be 

 distinguished, of which nine are in the Californian flora, and two iu 

 the Mississippi region and eastward.* 



* COLLINSIA Nutt. 

 § 1. Con/er<//7o?-cB, -pedicellis brevibus vel subnullis. Occidentales. 

 * Corolla valde tleclinata, fauce saccata subtransversa (in tubiim proprinm 

 quasi hemitropa) vix longiore quam lata: fiiamenta sujieriora basi parce bar- 

 bata : glandula (rudimentura staminis quintij parva, sessilis. 



