

HESPEEOGENIA, A NEW GENUS OF UMBELLIF- 

 ERAE FROM MOUNT EAINIEE. 



By John M. Coulter and .1. N. Kosk. 



Hesperogenia Coult. & Rose, gon. nov. 



Calyx teeth obsolete ; stylopodium wanting ; frnit ilattoned laterally, nearly orbic- 

 ular or shortly oblong, rounded at base and apex, glabrous; carpels nearly terete in 

 section, with equal-indistinct, filiform ribs and thin pericarp ; oil tubes 2 to 3 in the 

 intervals; seed face broad, slightly concave. Low acaulescent plants; leaves once 

 or twice ternate, with broadish segments. Umbel of few unequal rays without invo- 

 lucre and with one or two involucel bracts. Flowers yellow. 



This genus is nearest to Museniopsis, but differs especially in its broad seed face, 

 which is never involute or deeply concave. In the seed face it approaches Eulophus 

 and Pimpinella, but differs from both in not having a conical stylopodium and from 

 the former, also, in its yellow (lowers. The shape of carpels and ribs suggests Velaea 

 glauca, but the Beed face is not, of the Velaea type. 

 Hesperogenia stricklaiidi Coult. & Rose, sp. nov. Plate XXVII. 



Root deep-seated, somewhat tuberous-thickened, crowned with a slender root- 

 stock (?); leaves 3 or 4, all basal, without stipnlar bases, ternate or biternate, the 

 segments lanceolate, acute, 12 mm. long, glabrous; petioles 3.8 to 5 cm. long; scape 

 7.5 to 10 cm. long, either naked or with a small bract-like leaf; rays 3 to 6, some of 

 the sterile as well as the fertile ones short (4 mm. long), others 14 mm. long; fruit 2 

 mm. long, either sessile or on pedicels 4 mm. or less long; styles long, reflexed. 



Collected on Mount Rainier, Washington, altitude 2,000 meters, by Percy Strick- 

 land in 1896 and by O. D. Allen, August 30, 1897, and September 6, 1898 (No. 278); 

 also by J. B. Flett in grassy meadows on north side of mountain, altitude 1,540 

 meters, August, 1897. 



Mr. Piper writes to Mr. Rose that he also collected the plant on the south side of 

 the mountain in 1895. 



Explanation of Plate.— Fig. 1, plant; fig. 2, fruit; fig. 3, section of carpel. 



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