Rydberg : Rocky Mountain flora 67 



Glycosma maxima Rydb. sp. now 



Perennial; stem I m. high or more, puberulent or glabrous, 

 pilose at the nodes; lower leaves twice compound, first pinnate and 

 the lower primary divisions ternate; the upper leaves ternate or 

 twice ternate; leaflets oblong-lanceolate, 5-10 cm. long, minutely 

 puberulent; branches of the umbels 9-12, in fruit more or less 

 spreading; pedicels in fruit 1-1.5 cm. long; fruit fully 2 cm. long, 

 obtuse at the base, contracted above into a beak 2 mm. long; 

 stylopodium conical, 0.5 mm. long, about as long as the styles. 



This is related to G. occidentalis Nutt., but the fruit is much 

 larger (in G. occidentalis only 12-16 mm., rarely 18 mm. long), and 

 the rays of the umbels are in fruit usually widely spreading, while 

 in G. occidentalis they are nearly erect. The spreading rays sug- 

 gest G. ambigua and G. Bolanderi, but in both these species the 

 stylopodium is flatter. 



Utah: Mount Nebo, Aug. 15, 1905, Rydberg & Carlton 7585 

 (type, in herb. N. Y. Bot. Gard.) ; Rocky Canyon, Provo, Aug. 16, 

 1887, Tracy 684. 



Montana: Midvale, July 24, 1903, Umbach 508. 



Atenia H. & A. Bot. Beech. Voy. 349. 1840 



This I think is a good genus, distinct from Carum. Although 

 the fruit is almost the same, the habit is quite different. The 

 habit of Atenia is the same as that of Eulophus. In fact it is 

 hard to distinguish the two genera without mature fruit, both 

 having the fascicled tuberous roots, the narrow leaf-segments, 

 the same inflorescence and flowers. The only essential differences 

 are the deeply concave seed-face with a central ridge and the sev- 

 eral oil tubes in Eulophus and the plane face and solitary oil tubes 

 in Ataenia. The following species are found in the Rocky 

 Mountains: 



Atenia Gairdneri H. & A. Bot. Beech. Voy. 349. 1840 



Edosmia Gairdneri Nutt.; T. & G. Fl. N. Am. 1: 612. 1840. 

 Carum Gairdneri A. Gray, Proc. Am. Acad. 7: 344. 1867. 



Atenia montana (Blank.) Rydb. 

 Carum montanum Blank. Mont. Agr. Coll. Sci. Bot. 1: 91. 1905. 



