84 NORTH AMERICAN FLORA [VOLUMB 25 



48. Cathartolinum multicaule (Hook.) Small. 



Linum selaginoides T. & G. Fl. N. Am. 2 : 205. 1838. Not L. selaginoides Lam. 1789. 

 Linum multicaule Hook. ; T. &. G. Fl. N. Am. 2: 678. 1840. 

 Linum hudsonioides Planch. Lond. Jour. Bot. 7: 186. 1848. 



Plants 1-3 dm. tall, bright-green. Stems branched at the base, the branches tufted, 

 erect or nearly so, puberulent or finely rough-pubescent, sharp!)' angled at least in age, 

 somewhat corymbose or fastigiate above ; leaves numerous, appressed or erect and imbri- 

 cated, or those at the base of the plant lax, the blades rigid, those of the lower leaves linear 

 to linear-lanceolate, those of the upper ones linear-subulate to subulate, less than 1 cm. 

 long, entire, but sometimes finely ciliate ; bracts similar to the upper leaves ; outer sepals 

 becoming 4.5-5 mm. long, each with an elliptic or oval body abruptly narrowed into a 

 shorter subulate terminal awn ; inner sepals similar to the outer ones but mostly smaller, 

 and like them with erose ciliate bodies ; petals yellow, 9-12 mm. long ; capsules subglobose, 

 3-3.5 mm. long. 



Type locality : Texas. 

 Distribution : Texas. 



3. HESPEROLINON (A. Gray) Small, gen. nov. 



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



Annual often dichotomously branched herbs. Leaves alternate, or rarely opposite, 

 without stipules but sometimes with stipular glands ; blades narrow, entire or glandular- 

 toothed. Sepals 5, glandular-ciliate, except in H. congestum, persistent. Petals 5, pink, 

 rose-purple, or white, or rarely yellow, with 1-3 ventral appendages and 2 lateral lobes near 

 the base. Stamens 5 ; filaments united at the base, the free portions abruptly dilated or 

 2-toothed at the base. Gynoecium 3-carpellary, not cartilaginous at the base; styles 3, 

 distinct ; stigmas terminal, minute or capitate. Capsule 3-celled, with complete or incom- 

 plete false partitions, separating into 6 valves. Seeds turgid. 



Type species, Linum californicum Benth. 



Blades of the leaves and of the bracts glandular-toothed ; false septa narrow 

 throughout. 

 Leaf-blades ovate, sessile, flat; corolla pink. 1. //. drymarioides. 



Leaf-blades lanceolate to linear, partly clasping, folded ; corolla yellow. 2. H. adenophyllum. 

 Blades of the leaves and of the bracts entire ; false septa dilated near the 

 base. 

 Flowers all relatively long-pedicelled, not clustered at the ends of the 

 branches. 

 Corolla yellow or yellowish ; false septa reaching the axis of the cap- 

 sule near the base. 

 Outer sepals entire ; staminodia 2-lobed : flowers long-pedicelled. 3. H. Clevclandii. 

 Outer sepals glandular-toothed ; staminodia wanting ; flowers short- 

 pedicelled. 4. //. Breweri. 



Corolla white, pink, or purplish ; false septa not reaching the axis of 

 the capsule. 

 Sepals about equaling the capsule ; petals with imperfect or obso- 

 lete appendages. 5. H. mici anllium. 

 Sepals much shorter than the capsule ; petals prominently ap- 

 peudaged. 6. H. spergulinum. 

 Flowers, at least those near the ends of the branches, short-pedicelled or 

 sessile, hence borne in terminal clusters. 

 Sepals with glandular-toothed margins, glabrous, or with scattered 

 hairs on the back. 

 Sepals pubescent ; capsules ovoid. 7. H. confer turn. 

 Sepals glabrous ; capsules depressed-ovoid. 8. H. californicum. 

 Sepals not glandular-toothed, densely pubescent. 9. H. congestum. 



1. Hesperolinon drymarioides (Curran) Small. 



Linum drymarioides Curran, Bull. Calif. Acad. 1 : 152. 1885. 



Plants 1-3 dm. tall, the stem dichotomous, usually from the base, purple or reddish, 

 sparingly villous with white hairs ; leaves few, the blades ovate, often broadly so, 3-10 mm. 

 long, acute or abruptly pointed, inconspicuously glandular-toothed, flat, sessile ; bracts similar 

 to the leaves but smaller; pedicels filiform, longer than the calyx at maturity; outer 

 sepals lanceolate or oblong-lanceolate, becoming 3.5 mm. long, short-acuminate, sparingly 



