POLEMONIACE^E. 249 



6. G. densifolia, Benth. Perennial, J — 2 ft. high, more or less floccose- 

 ivoolly; stems erect, virgate, from a somewhat woody base: leases rigid, 

 linear, laciniate-pinnatifid or incised, the short lobes subulate : fl. many, 

 in a dense head: corolla %—% hi. long, salverform, violet-blue; limb 

 % in. broad in expansion: anthers linear. — Mountains of Santa Clara 

 Co., and southward. 



5. LINAJJTHUS, Benlh. Annuals, with opposite leaves mostly 

 divided digitately into 3 or more narrowly linear rigid segments. 

 Inflorescence dichotomous and loose, or cymose-glomerate and terminal 

 only. Calyx prismatic; its segments equal; its tube scarious between 

 the angles. Corolla usually salverform, often with very long and slender 

 tube. Stamens equal and equally inserted on the corolla. Capsule 

 few- or many-seeded. 



* Stems dichotomously branching ; flowers scattered. 



1. L. dichotomns, Benth. Erect, 4—10 in. high, the nodes few and 

 exceeding the leaves, these or their 3 — 5 segments linear-filiform, 1 in. 

 long: flowers subsessile: calyx prismatic, scarious except the 5 prom- 

 inent angles which are prolonged into acerose-linear recurved segments: 

 corolla salverform; tube scarcely exserted; limb 1 — 1% inches broad, 

 white, shaded on the outside with dark chocolate-color: stamens inserted 

 below the middle of the throat, the base of each filament set within a 

 nectariferous groove; anthers linear: cells of capsule very many-seeded: 

 seeds roundish, not mucilaginous when wet. — Common. May. 



2. L. liniflorns (Benth.), Greene. A foot high, slender, glabrous: 

 leaf-segments about 3, filiform: flowers on long slender pedicels in a 

 loose cymose panicle: corolla with neaHy obsolete tube; limb rotate, % — 1 

 in. broad, the obovate entire lobes white, marked with 7 deep blue 

 veinlets: stamens nearly as long as the corolla-lobes; filaments with a 

 dense pilose ring just above the base, the very short corolla-tube below 

 them pubescent: ovules 6—8 in each cell: seeds mucilaginous. — Dry 

 hills and sandy plains. April, May. 



3. L. fllipes (Benth.), Greene. Slender, often diffuse, 4 — 10 in. high, 

 scabrous-puberulent: pedicels elongated, filiform: calyx a line long, 

 narrow-campanulate, hispidulous throughout, the subulate-acerose teeth 

 little shorter than the tube: corolla pale purplish, 3J*j lines long, the 

 limb campanulate from a short cylindrical tube: seeds about 8 in each 

 cell of the capsule.— Open hillsides. May. 



4. L. Bolanderi (Gray), Greene. Slender as the last, differing in a 

 narrowly cylindraceous calyx and salverform corolla, the tube of which 

 equals the calyx; the rotate limb purplish and about 3 lines wide: seeds 

 2 — 5 in each cell. — Sonoma Co. 



5. L. ambiguus (Battan), Greene. Stouter than the last; corolla 

 much larger {% in. long), not strictly salverform, the slender tube little 



