Sierras, but the material is not sufficient for description. 



Lomatium alatum C. & R. does not deserve varietal rank 

 even. It is only a form of tritematum. I collected both forms 

 at the same place. 



Cogswellia serpentina n, sp. 



Allied to C. millefolia. Tufted plants. 18 inclies high, but 

 acaulescent from a deep and apparently fleshy root, crowns sev- 

 eral; leaves delicate and slender, 6-8 inches long", with narrow 

 sheaths and short (1-2 inches long) petioles, biternate and inen 

 bipinnate. primary- divisions with petioles 1-2 inches long and 

 slender, the secondary ones evident but short on the lateral 

 ones and 2-3 inches long on the central ones, pinnae 3-5 pairs 

 and these with 3-5 pairs of mostly distinct, oblanceolate to 

 obovate. apiculate segments, 1-2 lines long; whole plant 

 smooth; peduncles stout and erect and finely striate; involucre 

 of 2 linear, subulate, small bracts; involucels of several sep- 

 arate linear-subulate and hyaline-margined bracts, 2 lines 

 long; rays many. 2-3 inches long, rather unequal but not unilat- 

 eral; pedicels 4 lines long, 10-20, widely spreading, filiform; 

 fruit elliptical, 3-4 lines long, l>4-2 lines wide, the wings 

 about half as wide as the body, rounded and obtuse at both 

 ends; oil tubes solitary. 2 on the commissure, large; ribs 

 the 



Eryngiu 



annual, widely branched; leaves li 

 , succulent, 3-12 inches long, soft. 



parallel vei 



enlarged sheath-like petiole and with^'hy^..... ...c.^... - 



sheath, but not sheathing, not spinose, stem leaves shorter; 

 heads single to cymose, oblong, black-purple, 9 lines lone. 4 

 lines wide; bracts Imear-lanceolate. 9 lines long rigid entire, 

 pungent, white within, many; bractlets minute iinear.'obtuse. 

 thin, terminal bracts very long and linear, 6 lines long and like 

 the other bracts, about as long as the head ; fruit 1 line long, 

 j'ensely covered with flattened, white processes. 3 times as 

 long as wide. Manifestly allied to E. soarganiphvlhim. but 

 flitters in the long and narrow bracts, minute bractlets. and 

 densely scalv fruit. It grows in water where it floats, and on 

 the muddy shores where it is prostrate and straggling- upper 

 eaves opposite, and leaves with cross sections about every 9 

 Itnes apart. Marsh Lake, Sierra MadreMts Chihuahua, 



