OF ARTS AND SCIENCES : JUNE 11, 1867. 851 



Lessingia leptoclada : floccoso-lanata, demum glabrescens, baud 

 viscosa ; caule erecto virgato superne ramos floridos sispius coryrabosos 

 filitbrmes proferentibus ; foliis infimis spathulatis subdentatis, superi- 

 oribus lanceolatis linearibiisque integerrimis basi brevissime sagittato- 

 adnatis, ramorum parvis nunc raris in bracteas subulatas transeuntibus ; 

 capitulis 5-20-tioris solitariis bi-quinisve ramulos seu pedunculos ter- 

 minantibus ; involucri squarais lanceolato-linearibus acutatis mucrona- 

 tis ; corollis consimilibus purpureis, limbo a^qualiter 5-partito ; pappo 

 corollse tubum ada^quante ; radice (ut in omnibus sp.) annua. — Tres 

 forrase admodum divers^e, ut videtur coUigendiB : — typica, 1 - 2-pe- 

 dalis, capitulis 18-20-floris; involucre turbinate pluriseriali, squamis 

 exterioribus gradatim brevioribus ; ramis floridis gracillimis nunc sim- 

 plicibus aj)ice 1 - 3-ceplialis, nunc proliferis pedunculis filiformibus 

 corymbosis. — Yosemite Valley, in sandy soil, Bolander. [And now 

 received from the collections of Bridges and Torrey, and in a collec- 

 tion from Dr. Kellogg, said to be from near San Fi-ancisco.] 



Var. MiCROCEPHALA : sesqui - bipedalis ; caule foliisque caulinis 

 (argute dentatis rigidioribus) denudatis leviter glanduloso-scabridis ; 

 ramis tloridis filiformibus effuse paniculatis decorapositis ; capitulis parcis 

 lin. 3 tantum longis involucre 5-floro ; turbinate. — On Bear Mountain, 

 Dr. Torrey, 1865. I take this to be a form of L. leptoclada, probably 

 from a mere exposed station, and with depauperated inflorescence. 



Var. TENUIS : 3 - T-pellicaris ; capitulis paucis 5 - 7-floris ; involucro 

 angusto e squamis paucioribus attenuatis minus imbricatis. — Yosemite 

 Valley, with the typical form, of which, as Mr. Bolander did net 

 distinguish the two, I infer it to be a remarkable-depauperate state. 

 But Dr. Torrey, who likewise collected it, regarded the three plants as 

 wholly distinct species. Further observation will determine. The 

 corolla in all is apparently light purple or whitish, as in all the other 

 species except L. Germanorum, where they are yellow : the lobes 2 or 

 3 lines long, oblong, becoming linear, their margins induplicate in aesti- 

 vation up to the nerves (as in the others) : inner flowers at length 

 probably as large as the outermost : genitalia included : appendages of 

 the style tipped with a prominent cusp much exceeding the bristles. 



CoRETHROGYNE SPATHULATA : caulibus ctespitosis decumbentibus 

 apice vel ramis paucis adscendentibus foliosis menocephalis ; foliis obe- 

 vate-spathulatis versus apicem serratis, superioribus evalibus oblongisve, 

 summis in bracteas lineares transeuntibus ; capitulo pre genere maxi- 

 mo ;' involucre hemisphserico ; squamis linearibus vel subspathulatis 



