STANDLEY — FLORA OF GLACIER PARK. 333 



Stem with 2 small opposite linear bractlike leaves; capsule opening around the base, 

 the top coming off like a cap; petals 6 to 8 1. OREOBEOMA. 



Stem with numerous leaves, or with 2 broad leaves; capsule opening at the top by 3 

 valves; petals 5 2- CLAYTONIA. 



1. OREOBROMA Howell. 



1. Oreobroma pygmaea (A. Gray) Howell. Breadroot. East entrance, on creek 



bank, Umbach. Wash, to Calif., Colo., and Mont.— Stems 2 to 5 cm. high, clustered, 



from a thick fleshy root, 1-flowered; leaves linear, 2 to 7 cm. long; petals pink or white, 



8 to 10 mm. long. 



2. CLAYTONIA L. Springbeauty. 



Glabrous annuals or perennials; leaves opposite or alternate; flowers in racemes. 



Stem leaves 2, opposite. 



Plants with long thick taproots; basal leaves numerous, obtuse . 1. C. megarrhiza. 



Plants with rounded tuber-like roots; basal leaf 1, acute 2. C. lanceolata. 



Stem leaves numerous, alternate. 



Leaves spatulate; plants perennial 3. C. parvifolia. 



Leaves linear; plants annual 4. C. linearis. 



1. Claytonia megarrhiza (A. Gray) Parry. Alpine springbeauty. Frequent above 

 timber line, on high rock slides and rocky slopes. Wash, to Mont, and N. Mex.— 

 Stems 3 to 10 cm. long, in a dense tuft; basal leaves spatulate or rounded, 1 to 3 cm. 

 long, on very long broad petioles; petals 6 to 8 mm. long, pink or white. 



The leaves and stems are usually tinged with red. The roots are very elastic. 



2. Claytonia lanceolata Pursh. Frequent in meadows above timber line; also in 

 aspen tliickets at east entrance. B. C. to Calif., N. Mex., and Sask.— Stems 5 to 20 cm. 

 high; stem leaves lanceolate or ovate-oblong, 2 to 5 cm. long, sessile; petals white or 

 pink, 6 to 8 mm. long. 



The plants bloom only a short time and are not conspicuous. The tuberous roots 

 were dug in the spring by the Blackfoot Indians, boiled, and eaten. 



3. Claytonia parvifolia Moc. Pink springbeauty. Frequent at low and middle 

 altitudes, extending up to timber line, in moist woods or thickets or along brooks. 

 Alaska to Calif, and Mont. {Naiocrene parvifolia Rydb.)— Stems slender, 10 to 30 cm. 

 long, ascending; leaves 5 to 20 mm. long, the lower ones petioled; petals pink, 8 to 10 

 mm. long, notched. 



The plants produce small green bulblets in the leaf axils. 



4. Claytonia linearis Dougl. Occasional on the east slope at low altitudes, in moist 

 thickets or on open hillsides. B. C. to Calif, and Mont. {Montiastrum lineare 

 Rydb.)— Stems slender, 5 to 25 cm. high, branched; leaves 1 to 5 mm. long; seeds 

 black and shining. 



The flowers are seen only in spring. 



29. SILENACEAE. Pink Family. 



Annual or perennial herbs with opposite entire leaves; flowers most often in cymes; 

 sepals 4 or 5, distinct or united; petals 4 or 5, sometimes wanting; fruit a capsule, con- 

 taining few or many seeds.— The name Caryophyllaceae is often used for the family. 

 The cultivated pinks and carnations belong to the group. 

 Sepals united; petals clawed. 



Styles 5; capsule with 10 teeth 1- LYCHNIS. 



Styles 3; capsule with 6 teeth 2. SILENE. 



Sepals distinct; petals not clawed. 

 Petals deeply 2-lobed ; capsule with twice as many valves or teeth as styles. 

 Capsule long, cylindric, often curved, opening with 10 teeth at the apex; styles 5. 



3. CEEASTIUM. 

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