532 PROCEEDINGS OP THE AMERICAN ACADEMY 



(barely half a line in length) most closely imbricated all around the 

 rhachis, so that the leaf (1^ to 2 inches long) resembles a mouse- 

 tail, when young clothed with soft silky down, which conceals the 

 parts beneath. When old the leaflets are more apparent, but they 

 seem to remain permanently imbricated. Flowers, when expanded, 

 scarcely 3 lines in diameter ; the petals exceeding the calyx, roundish- 

 flabelliforra, and scarcely at all unguiculate, becoming obovate after 

 anthesis. Fruit not seen. 



Tvesia gracilis, Torr. & Gray, in Newberry, Rep. 1. c, t. 11, = Po- 

 tentilla Neivberryi, Gray. 



Epilobium obcordatum : nanum, glabrum ; caulibus (3 - 5-polli- 

 caribus) decumbentibus 1 - 5-floris ; foliis oppositis lato-ovatis ovalibus- 

 que subintegerrimis opacis glaucescentibus ; alabastris nutantibus ; 

 calycis tube ultra ovarium pruinoso-puberulum producto infundibuli- 

 formi lobis lato-lanceolatis subdimidio breviore ; petalis magnis liBte 

 roseis obcordato-bilobis patentibus ; stylo stamina superante declinato ; 

 stigmate breviter quadrilobo ; capsulis pedicellatis clavato-oblongis. — 

 In the Sierra Nevada, at Squaw Valley and Ebbett's Passes, alt. 

 8,000 - 8,500 feet. — A charming alpine species, connecting the 

 Chamcenerion with the other sections of the genus, and with large and 

 showy flowers, having the aspect of an (Enotkera or a Glarkia. The 

 leaves are numerous, mostly longer than the internodes, closely sessile, 

 and only from one third to two thirds of an inch in length. [Also 

 found recently by Dr. Torrey.] 



EuCHARiDiUM Brev^ ERi : foliis oblongo-lanceolatis ; petalis latis- 

 sime cuneato-obcordatis cum lobo intermedio lateralibus longiori valde 

 angustiori ; filamentis apice eximie clavatis ; antheris villoso-ciliatis ; 

 stigmate 2 — 4-partito (s;T?pius bipartito segmentis elongatis bilobis) ; cap- 

 sula elongata (ultrapollicari) ; seminibus magis alatis. — Dry summit 

 of Mount Oso, at the elevation of about 3,200 feet. — This would be a 

 fine acquisition to the gardens, as the flowers are larger and fuller 

 than those of E. concinnum, the petals fully three fourths of an inch 

 wide, very broadly cuneiform-obcordate with a narrow linear-spatu- 

 late median lobe (not exceeding two lines in width) in the deep sinus. 

 The filaments, also, instead of being filiform, are conspicuously dilated 

 at the summit, where they are broader than the linear anther, ap- 

 parently clavate rather than petaloid. The villosity of the anthers, 

 which is here very striking, is found sparingly in JS. concinnum. 



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