330 POLBMONIACEAB. 



Leaves mostly 1 to 3 times pinnately dissected into narrow segments, not pungent; flower- 

 clusters not bracteate; calyx-teeth equal; corolla funnelform. 

 Stamens included; flowers few in mostly loose clusters. 



Flowers blue or purple; proper tube of corolla much shorter than calyx; leaves pin- 

 nately parted into entire or toothed lobes ?. (,'. multicaulis. 



Flowers 3-colored, blue, purple, and yellow; leaves laciniately bipinnatitid . 4. G. tricolor. 

 Stamens more or less obviously exserted; flowers in capitate clusters terminating long 

 peduncles. 



Corolla segments obovate or oblong 5. G. achilleae folia. 



Corolla segments nearly linear 6. (J. capitata. 



Leaves or their simple divisions linear or filiform and rigid; flowers crowded into capitate 

 leafy-bracted clusters, the calyces and the bracts densely woolly-matted; corolla 

 salverform; stamens exserted. 



Annual or biennial, not woody 7. G. virgata. 



Woody-based perennial; corolla 6 to 8 lines long 8. G. densi folia. 



B. Calyx-segments mostly unequal, entire or some toothed. 

 Flowers in terminal capitate bracted clusters; corolla tubular-funnelform or salverform, 

 the stamens equally inserted upon it; leaves pinnatifid or the lowest subentire, the 

 segments mostly rigid and subulate or cuspidate. —Subgenus NavAHRETIA. 

 1. Flowers white (pale blue in no. 11). 

 Capsule not regularly dehiscent, the walls thin and transparent and closely covering the 

 seeds which are agglutinated into a mass. 

 Stems erect or spreading. 



Leaves bipinnatifid; bracts densely -white-tomentose 9. G. intertexta. 



Leaves once pinnatifid; sinuses of the calyx white-hairy 10. G. leucocephala. 



Primary flower-cluster on a very short stem or stem almost none, the branches radiating 



from beneath it and prostrate; calyx-segments trifid 11. G. pro strata. 



2. Flowers blue (except no. 12). 

 Capsule regularly dehiscent by valves and releasing the seeds which are free from each 

 other; flowers blue (except no. 12). 

 Leaves (or some of them) pinnately parted with the divisions incised or parted. 

 Stamens exserted; capsule 1-celled. 



Leaves with innocuous teeth; flowers creamy-white, 4-merous; capsule 2-seeded 



12. G. cotulaefolia. 

 Leaves with pungent teeth, the terminal leaflet spatulate-dilated; capsule 1 -seeded. . . 



13. G. pubescens. 

 Stamens not exserted. 



Seeds 8 to 12 in each cell; herbage strongly mephitic-scented 14. G. sqnarrosa. 



Seeds 4 in each cell; herbage honey-scented 15. G. mellita. 



Leaves merely pinnatifid or incised or many of them entire. 

 Capsule several-seeded. 



Erect slender plants; bractlets laciniately cleft, especially toward the base 



16. G. hcterodoxa. 

 Low very rigid and spiny plants; bractlets dilated and with strong marginal spines.. 



17. G. atractyloides. 



Capsule with 1-seeded cells; corolla 6 or 7 lines long; bractlets, especially the inner 



ones, lanceolate-cleft at apex 18. (7. viscidula. 



1. G. gracilis Hook. Simple^ or branched above, 3 to 8 in. high; herbage 

 pilose-pubescent, the hairs often gland-tipped; Leaves opposite, oblong to lanceo- 

 late, entire; inflorescence cymose and terminal; calyx cylindrical. ."> or 4 liii"s 

 Jong, much distended in fruit by the globose capsule, the short teeth accrescenl ; 

 tube of corolla yellow, surpassing the calyx, the limb 1 to 1% lines broad, its 

 lobes roundish, emarginate; Btamens unequally inserted; seeds 1 in each cell, 

 willi a rather broad thin margin. — (Collomia gracilis Dougl.) 



Inconspicuous hut rather common on low hills of the Coast Ranges and in 

 the Sierra Nevada foothills. Mar.-Apr. 



2. G. gilioides (Benth.) (Jreene. Loosely branching, erect or diffuse, B 

 to 20 in. high; radical and lower leaves pinnately parted into narrowly oblong 

 or lanceolate divisions, or all so divided, or the upper palmately divided into ."> 

 to 5 obovate or lanceolate divisions; corolla 4 to <> lines long, salverform, blue- 

 purple; stamens unequally inserted; capsule globose; seeds 1 or 2 in each cell. — 

 (Collomia gilioides Benth.) 



