OF ARTS AND SCIKNCES. 91 



glandulosis pub '^cens, l-2-iK"(1:vle ; rauiis <,M-:icililnis subflexuosis ; fnliis 

 inembranaceis ovatis sen ovato-oblonj^is pctiolalis basi sulx-onlatis vcl 

 subcuneatis nunc iiite<Tris nunc lol)is latcialibns utrin(|nL' auriculatis ; 

 cymis umbolliforniibus prinunn tcrniinulibns pauci-phirilloris nunc 

 fui'catis ; pedicellis tilifornnbus ; corolla violacca plano-rolata angulato- 

 subquinqueloba pollicem dianietro ; calyce 5-lobo, fi-uctifcro erecto sub 

 bacca (purpurea?) globosa niodice anipliato. — California, tlirougli the 

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

 County, J. G. Lemmon, 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. umhclliferuni, Dr. Bige- 

 low's specimen from Cocornungo 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 Kiujf's Expedition, l^esides 

 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. AVallacei. Majus; ramis junioribus pedunculisque pilis longis 

 pluri-articulatis viscidis villosis ;• cyma furcata ampliore ; corolla ses- 

 quipollicera diametro hete violacea. — Island of Catalina, off San 

 Pedro, California, Wallace. No. 586 of Coulter's Californian coUec 

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

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



SoLANDM UMBELLiFERUM Esch. Tliis 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. CuUfornicum of 

 Dunal 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 in 

 the Mississippi region and eastward.* 



* COLLINSIA Nutt. 

 § 1. Confertijlorce, pedicellis brevibus vel subnullis. Occidentales. 

 * Corolla vaUle declinata, fauce saccata subtransversa (in tubum propriiim 

 quasi liemitropa) vix longiore quam lata : filamenta superiora basi parce bar- 

 bata : glanilula (rudimentum staniinis quinti) parva, sessiiis. 



