Thompson — Four New Plants from Mexico. 21 



Smaller young leaves decidedly purple, tinted on both surfaces, except 

 a thin, hyaline, finely fimbriated margin; older larger (as described 

 above), of light green color and no purple tint, with a thin narrow, 

 nearly transparent, fimbriated margin. Neither leaves nor stem show 

 any indication of glaucousness. 



Flowering stalk arising from below the rosette, obliquely ascending, 

 rather scattered leafy throughout, the lower portion of the same pale 

 green as the main stem, but the upper portion tinted with brownish- 

 red and only in the inflorescence becoming glaucous; lower bracts dif- 

 fering from the mature leaves of the rosette in size, 5.5 cm. long by 

 2.5 cm. broad, and in being finely denticulate instead of fimbriate. 

 These bract-leaves become smaller toward the inflorescence where they 

 are only 1.8 cm. long and lanceolate in outline, somewhat purple-tinted 

 and glaucous. Inflorescence of two secund racemes; lower pedicels 

 1.5 cm. long, curved by the weight of the flower, neither articulate nor 

 bracted; calyx lobes decidedly unequal, lanceolate, and, like the pedicels, 

 pale green slightly tinted with purple and quite glaucous, nearly hori- 

 zontally spreading. Corolla 5-angled, 1.5 cm. long, 1 cm. in diameter at 

 the base, slightly tapering to the recurved obliquely spreading tips; 

 petals separate to the base, lanceolate, gradually tapering from the 

 middle to a long acute apex, somewhat gibbous at the base and obtusely 

 angled on the back, outer surface rose pink, strongly glaucous, tips 

 recurved so the apex points at right angle from the axis of the flower, 

 inner surface light orange yellow, tinted with red at the very apex 

 and part way down the median line by short, straight, longitudinal, 

 red pencilings; gland large, lunate. Stamens inserted alternately in 

 two planes, tapering from the base upward, pale yellow, anthers of the 

 same color. Ovary white, three-fifths the pistil length; style dark red- 

 purple, tapering upward to the green stigma which is somewhat 

 recurved at maturity; anthers and stigmas in one plane. — Plates 

 VIII-IX. 



The plant, collected by Dr. Trelease at El Parque, Mo- 

 relos, Mexico, in 1905 (M. B. G. No. 102/05/3), appears 

 to be quite distinct from anything heretofore described. 

 The individual flowers are nearly identical with those 

 of Echev. 8 cheerily Lindl. but the plant is quite different 

 in all vegetative characters. It differs from all other 

 species in having fimbriated leaf-margins — a character 

 not to be observed in any other species save to a slight 

 degree in quite young leaves of Echev. fuigens, Lem. 



Sedastrum pachucense n. sp. 



Perennial. Stems numerous, from a root crown, erect, spreading or 

 declined, simply or paniculately branched above, 3-4 mm. in diameter. 



