86 NORTH AMERICAN FLORA [Volume 25 



ones and more copiously glandular-toothed; petals white or pale-pink, mostly 3-5 mm. 



long; capsules ovoid, about 2.5 mm. long, about equaling the sepals. 



Type locality : Mount Bullion, Mariposa County, California. 

 Distribution : Oregon to middle California. 



6. Hesperolinon spergulinum (A. Gray) Small. 



Linum spergulinum A. Gray, Proc. Am. Acad. 7: 333. 1868. 



Plants 1-4 dm. tall, the stem branched, sometimes from near the base, the branches 

 dichotomous, glabrous or sparsely pubescent near the nodes ; leaf-blades narrowly linear 

 or those near the base of the plant narrowly linear-spatulate, mostly 1-2 cm. long, entire, 

 more or less involute ; bracts similar to the leaves but smaller ; pedicels capillary, ulti- 

 mately somewhat deflexed ; flowers mostly spreading ; outer sepals ovate, 1.5-2 mm. long, 

 glandless or with few irregularly-placed glandular teeth ; inner sepals slightly smaller than 

 the outer ones, with more glandular teeth ; petals pink, mostly 6-7 mm. long ; capsules 

 ovoid, about 2 mm. long, much exceeding the sepals. 



Type LOCALITY : Cloverdale, Sonoma County, California. 

 Distribution : Middle California. 



7. Hesperolinon confertum (A. Gray) Small. 



Linum californicum confertum A. Gray ; Trel. Trans. Acad. St. Louis 5 : 19. 1887. 



Plants 1-1.5 dm. tall, the stem green, glabrous, somewhat rigid, usually branched 

 throughout, the branches somewhat dichotomous, the divisions terminating in cluster-like 

 cymes at least during anthesis ; leaf-blades linear, 1-2 cm. long, acute, more or less invo- 

 lute, entire ; bracts similar to the leaves but smaller ; sepals pubescent, the outer ones 

 lanceolate to ovate-lanceolate, becoming 4-4.5 mm. long, with few irregularly-placed 

 glandular teeth ; inner sepals slightly smaller than the outer and with more glandular 

 teeth ; petals pink, 5-6 mm. long; capsules ovoid, about 2 mm. long, slightly shorter than 

 the sepals. 



Type locality' : Mare Island, San Francisco Bay, California. 

 Distribution : Middle California. 



8. Hesperolinon californicum (Benth.) Small. 



Linum californicum Benth. PI. Hartw. 299. 1848. 



Plants 1-4.5 dm. tall, the stem glabrous, glaucous, striate-ridged, more or less branched, 

 the branches dichotomous, the divisions terminating in congested cymules ; leaf-blades 

 narrowly linear, mostly 1-3 cm. long, acutish, entire, often somewhat involute; bracts 

 similar to the leaves but smaller ; sepals glaucous, the outer ones lanceolate to oblong- 

 lanceolate or elliptic-lanceolate, becoming 4-5 mm. long, acuminate, with few irregularly- 

 placed glandular teeth, or ultimately entire; inner sepals similar to the outer but slightly 

 shorter and more copiously and more regularly toothed ; petals pink, 4-6 mm. long ; cap- 

 sules depressed-ovoid, about 3 mm. long, about equaling the sepals. 



Type locality. : Valley of the Sacramento. 

 Distribution: Middle and northern California. 



9. Hesperolinon congestum (A. Gray) Small. 



Linum congestum A. Gray, Proc. Am. Acad. 6: 521. 1865. 



Plants 1-3 dm. tall, the stem glaucous, more or less fine-pubescent above the nodes, 

 branched above, the branches often nearly erect, angled, terminating in congested cymules ; 

 leaf-blades narrowly linear, 1-3 cm. long, acute, finely pubescent, entire, involute; bracts 

 similar to the leaves but smaller and more pubescent ; outer sepals lanceolate or oblong- 

 lanceolate, becoming 4.5-5 mm. long, acuminate, entire, pubescent all over the outer side, 

 the margins glandless ; inner sepals lanceolate, slightly smaller than the outer ones, 

 similarly pubescent ; petals rose-purple, the basal teeth sharp ; filaments filiform ; capsules 

 ovoid, about 2.5 mm. long, nearly as long as the calyx. 



Type locality: Marin County, California. 

 Distribution : Middle California. 



