^ 



264 PORTULACACEAE 



Racemes short, only slightly exceeding the subtending leaves: seeds about 

 1 mm. long. 5. L, depressa. 



Blades of the basal leaves linear to spatulate; seeds 1 mm. long or less. 



Racemes elongate. 6. L. parviflora. 



Racemes very short. 



Stem-leaves 1-2 cm. long; seeds minutely muricate. 7. L. utahensis. 

 Stem-leaves less than 1 cm. long; seeds conspicuously granulated. 



8- L. spathulata. 

 Stem-leaves Unear, 9. L. exigua. 



1. L. asarifolia (Bong.) Rydb. Stem 2-3 dm. high, slender; basal leaves 

 long-petioled; blades reniform to rhombic-ovate, 2-8 cm. long; cauline leaves 

 closely sessile, broadly ovate or rounded; inflorescence bractless; petals white^ 

 6-10 mm. long, obcordate. Claytonia asarifolia Bong. Springy ground: Mont. 

 — -Utah — Calif. — Alaska. Mont, My~Au. 



2. L. sibirica (L.) Haw. Annual, or perennial with offsets; stem slender, 

 1-4 dm. high; basal leaves petioled; blades rhombic-ovate to lanceolate, 2-5 cm. 

 long; racemes elongate, lax, usually with linear or oblong bracts; petals rose- 

 colored or white, about 6 mm. long. C. sibirica L. Springy places and banks: 

 Mont.— Utah — Calif. — Alaska; Siberia. Suhmont. — Siibalp, My-Au. 



3. L, arenicola (Henders.) Rydb. Annual; stem 5-15 cm. long; basal 

 leaves petioled; blades narrowly Imear-oblanceolate, 2-5 mm. broad, 2-5 cm. 

 long; racemes rather many-flowered; petals pinkish, 5-6 mm. long, emarginate. 

 C. arenicola Henders. Sandy river banks and in pine woods; Wash. — Ida. 

 Son. — Suhmont, Ap-My. 



4. L. perfoliata (Donn) Haw. Annual; stem 1-3 dm. high; basal leaves 

 petioled; blades 2-7 cm. wide; stem-leaves connate into a rounded, 2-lobed cup; 

 sepals orbicular, in fruit 4 mm. long; petals white, slightly longer than the calyx; 

 seeds minutely granulate. C. perfoliata Donn. Banks and springy places: 

 Mont. — 'Utah — Calif. — Alaska. Subrnoni. — Mont, Mr-Je. 



5. L. depressa (A. Gray) Rydb. Annual; stem 5-10 cm. long; leaf-blades 

 5-15 mm. wide; stem-leaves connate, but usually less so on one side; calyx about 

 2 mm. long; pedicels 3-4 mm. long. C. parviflora depressa A. Gray. Montia 

 Viae A. Nels. Banks and springy places: S.D. — Colo. — Ariz. — Calif. — -B.C. 

 Suhmont, My-Jl. 



6. L. parviflora (Dougl.) Rydb. Annual; stem 1-2 dm. high, slender; 

 stem-leaves connate, forming a rounded disk, with 2 short-acuminate lobes; 

 pedicels in fruit usually much longer than the calyx; petals pink or white; seeds 

 scarcely granulate. C. parviflora Dougl. Banks and springy places : Ida. — Utah 

 — CaUf. — B.C. Suhmont. — Son. Ja-Je. 



7. L. utahensis Rydb. Annual; stem 2-15 cm. long; basal leaves petioled; 

 blades spatulate to linear, 1-3 cm. long, 2-6 mm. wide; stem-leaves connate, 

 forming an oblique, 2-lobed disk, 1-2 cm. broad; inflorescence corj^mbif orrn ; 

 sepals ovate, equalling the pedicels; seed 1 mm. in diameter, Sandy soil: 

 B Utah. Son. 



8. L. spathulata (Dougl.) Heller, Annual; stem 2-10 cm. long; basal 

 leaves 2-3 cm. long; stem-leaves ovate to lanceolate, connate on one side, 4-8 

 mm. long; inflorescence short and corymbiform; petals white, 3^ mm. long. 

 Hillsides and sahne ground: B.C. — Calif. — -Utah. Son, — Suhmont. Ap-Je. 



9. L. exigua (T. & G.) Heller. Annual; stems several, 2-8 cm. high; basal 

 leaves Unear or linear-oblanceolate, 2-4 cm. long; stem-leaves connate on one 

 side, 1-2 cm. long; petals white, obcordate, twice as long as the sepals; seeds 

 minutely muricate. C exigua T. & G. Hills: B.C. — Ida. — Calif. Son. Ap-Je, 



4. CRUNOCALLIS Rydb. Water Spring-Beautv. 



Floating or creeping perennials, rooting at the nodes, usually flagelliferous' 

 bearing winter buds at the ends of the flagella. Leaves opposite, several pairs- 

 Inflorescence racemose. Sepals 2. Petals 5, equal. Styles 3; ovules 3. Cap- 

 sule 3-valved; seeds 2-3, round-reniform, muriculate. 



1. C. Chamissonis (Ledeb.) Rydb. Perennial; leaves spatxilate or oblance- 



olate. 1-4 cm. loner: raceme 1-9-flowered: nedicf^ls rpcurvpH in fruit: netals uale 



