** * Stamens exserted; leaves only once pinnatifid, rigid, linear; corolla violet or purple,
barely half an inch long, about twice the length of the pungent calyx-lobes,
16. G. viscidula, Gr. A span high or less, at length much branched, viscid-pu-
bescent; bracts palmately cleft.
17, G, atractyloides, Steud. Much more rigid than the last; leaves broader, the
floral ovate, all with subulate spiny lobes; few flowered. '


§6. Hugelia, Benth.
* Root perennial; stems woody at the base.
18. G, densifolia, Benth. A foot or two high; stems leafy, leaves linear, rigid, the
short lobes subulate; flowers numerous in a compact head; corolla over half an inch
long, violet blue, exceeding the calyx, the lobes 3 lines long; anthers sagittate.
** Root annual, stems slender, a foot or less in height; leaves and their few (if any)
divisions filiform.
19. G. virgata, Steud. Tube of the blue corolla longer than the calyx; anthens
sagittate.
Var. floribunda, Gr. Low andrather stout; even tbe upper leaves pinnately 3-7-parted;
the numerous heads and flowers as large as G. densifolia.
§7. Lugilia, Benth.
* Flowers numerous in dense head-like clusters on long naked peduncles; stems erect; stamens
inserted in the very sinuses of the short and broad corolla; leaves twice or thrice pin-
nately dissected into linear divisions.
20. G. capitata, Dougl. Mostly smooth; stem slender, loosely branched above, a
foot or two high; lobes of the light blue (rarely white) corolla narrowly oblong, 2 lines
long.
21. G. achillezfolia, Benth. Stouter and lower than the last, often glandular;
the capitate clusters and flowers larger; calyx woolly; lobes of the deeper blue corolla
broad.
* * Flowers in small, rather loose clusters, or scattered in an open panicle.
