272 I^BAFI^KTS. 



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Basal leaves described from plants of the first year, these all 

 dying and disappearing before the flowering and fruiting the 

 next year. This is the most slender member of the genus, 

 very freely branching and copiously flowering, but the long 

 branches suberect, and the general aspect is much that of 

 certain species of Alchemilla. 



Tridophyi,i,um decandrum. Biennial, a foot high, rather 

 slender, parted only above the middle into short and more or 

 less widely divergent cymosely floriferous branches, both stem 

 and branches reddish or dull, not polished but viscidly villous : 

 leaflets 3, all cuneate-obovate, of thin texture, only the upper 

 part serrate, both faces with sparse appressed hairs : calyx with 

 triangular-lanceolate acute segments and lanceolate obtuse 

 bractlets : stamens 10: petals narrow, obovate-oblong, pale 

 yellow : achenes short and thick, almost semiorbicular, white 

 but dull. 



Palisade, Nevada, collected by the writer 24 July, 1893 ; 

 type sheet in his own herbarium, n. 11766. 



SiSYRiNCHiuM JUNCEI.I.UM. Plant rather low and rigid, the 

 mature fruiting plants only 8 inches high, the flowering ones 

 less than 5 inches, the leaves of little more than half the height 

 of the scapes, narrow, somewhat ensiform, about 6-striate- 

 nerved, glabrous: scapes of barely the width of the narrow 

 leaves, narrowly herbaceous-winged ; outer bract of the spathe 

 barely equalling the pedicels of the flowers, narrowed and 

 rigid : ovary, and even the summit of pedicel, as well as also 

 the base of the perianth, more or less hirtellous-hairy ; seg- 

 ments of deep blue perianth alternately subtruncate and merely 

 obtuse, in either case ending in a triangular-subulate cusp, 

 also more or less definitely ciliate across the summit with a 

 few hairs : capsule subglobose, sparsely hairy. 



Collected 3 Aug., 1911, in a marsh at 9100 feet, in the Gun- 

 nison National Forest, Colorado, by William H. Mast; type 

 specimens in U. S. Herb. A strongly marked subalpine 

 species, with short foliage and a peculiarly reedy aspect, 

 though of a pale-green herbage. 



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