150 MEMOIRS FKOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



40. Horkelia Utahensis (Wats.)- 



Ivcsia Utahensis Wats. Proc. Am. Acad. 17: 371. 1882. 



Potentilla Utahensis Greene, Pittonia, 1 : 162. 1888. 



Illustrations: Plate 91, f. 1; dissection of flower, /. 2; pistil, /. 3; fruiting 

 hypanthium and calyx, /. 4- 



Root perennial, woody, but not very thick, crowned by a cespitose caudex covered 

 with the remains of old leaves. Stems several, about 1 dm. high, simple and few-leaved, 

 glabrous below, glandular above. Stipules broadly ovate, entire. Basal leaves numer- 

 ous, 5-8 cm. long, glabrous, pinnate, with 15-20 pairs of crowded leaflets, these 3-8 

 mm. long, cleft to the base into 3 to 5, broadly oblong to nearly linear, one-nerved seg- 

 ments. Stem leaves few and very small. Cyme rather dense and somewhat flat topped. 

 Hypanthium somewhat glandular-puberulent, cup-shaped, veiny, 3 mm. in diameter; 

 bractlets linear, a third shorter than the ovate or lanceolate-ovate sepals. Petals yellow- 

 ish, spatulate, scarcely exceeding the sepals. 



This species has been placed nearest to H. Kingii, which it much resembles in the 

 form and size of the leaves. The plant is, however, if everything is taken into considera- 

 tion, more nearly related to the next and to H. Gordonii. Specimens collected by F. 

 Tweedy and T. S. Brandegee, in Washington, are so intermediate between the latter and 

 H. Utahensis that it is impossible to determine how to refer them. The typical form has 

 only been collected in Utah. 



Utah: M. E. Jones, No. 1231, 1879 (type); 1883. 



Washington: (?) F. Tweedy, 1883; T. S. Brandegee, 1882. 



California.- (?) E. Palmer, No. 172, 1888. 



41. Horkelia scandularis. 



Ivesia pygmaea Wats. Mss. in herb. Not Gray. 



Illustrations: Plate 91, f. 5; dissection of flower,/. 6; pistil,/. 7 ; stamen,/ 8;' 

 fruiting hypanthium and calyx, /. 9. 



Cespitose with a thick woody root. Stems several, less than 1 dm. high, decumbent, 

 slightly glandular-puberulent, nearly leafless. Basal leaves numerous, 2-5 dm. long, pin- 

 nate with numerous crowded and somewhat imbricated leaflets, glandular-puberulent, light 

 green, often yellowish ; leaflets about 2 mm. long, divided to the base into thick oblong seg- 

 ments. Cyme corymbiform. Hypanthium cupulate or almost saucer-shaped, in fruit 4 

 mm. in diameter ; bractlets oblong, about half the length of the ovate sepals. Petals obo- 

 vate, a little exceeding the sepals. Stamens 5, nearly equalling the sepals. Pistils 5-10. 



