ry 
362 
‘42. Sibbaldia L. 
deev=seated 
A low tufted mat-forming perennial herb with rootstocks and ternate 
leaves. Stipules present. Flowers in a terminal cymee Calyx 5=parted, 
the tube shallowly hemispherical, the sepals alternate with sepal-like 
appendages. Petals 5, yellow, obovate or oblanceolate. Stamens 5, inserted 
on the calyx tube, the filaments filiform. prisiilinieiy-ehpd styles attached 
laterally. Fruit a cluster of achenes. e 
1. S. procumbens L. - stems 
cacspLltcse, ehethed with tp persistent brown leaf bases; leaves tufted, the 
petioles i-o ca. long, hirsute, the blades trifoliolate, the leaflets obovatess 
cunsiform, e5-1.5 cm. long, both margins lightly convex, entire, the apex 
truncate with usually 3 short teeth, both surfaces Silky hirsute ‘wa green;  ¥ 
flowering stems erect, 2-10 om. long, hirsute, the bracts leaflike; flowers—> | 
i ; eer pedicels 3-4 mm. long; calyx campanulate, | 
the lobes ovate-oblong, acute, 2 mm. long, the appendages oblong, shorter; 
petals obovate, about equal to thé appendages or shorter, yellow; stamens 5, 
shorter than the petals; pistils severet> glabrous, the style subequal to 
the ovary; achenes shining, subglobose, 1.2 mm. in diameter, elevatéd on 
slender pilose stipes about as long, surrounded by the somewhat enlarged 
persistent calyx, the lobes of which are 3 mm. in fruite 
Occasional in moist spots at the tops of high peaks. 
——7 Summit of Mt. S. of Fish Lake, 7000 fte, Epling and Houck 9559; Snowy 
Top Mt., 7000 ft., Warren 278; Roman Nose, 7000 ft., Epling. 
= (2 some vhat blue 
Pe 
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