AMERICAN POLEMONIACER. 123. 
usually spinose-toothed or -cleft. The calyx here is seldom or 
never cyathiform-spreading as in Collomia, sometimes even 
urceolate-constrieted above the capsule, yet is never distended 
or ultimately ruptured by it, as happens in Gilia and Phlox. 
The astonishing range of variability in the capsule in Navar- 
retia which will be brought to view in the classification and 
description of species is almost something new in kind, in the 
annals of carpology, I think. On the strength of these dif- 
ferences, if they had been known in earlier days, a number of 
genera would surely have been proposed. 
POLEMONIUM. 
: Tourn. Inst. 146. t. 61; Linn. Gen. ed. 2. 56; Adans. Fam. 
ii. 214; Juss. Gen. 136; Nutt. Gen. i. 127; Benth. in DC. 
Prodr. ix. 316; Benth. & Hook. Gen. ii.,823; Gray, Syn. Fl. 
ii. part 1. 129. : 
Calyx herbaceous throughout, neither angled nor costate, 
slightly accrescent and loosely investing the capsule, cam- 
panulate or narrower, cleft to the middle, the segments lanceo- 
late or broader, equal, erect or connivent over the capsule, or 
campanulate-spreading, entire, never recurved nor aristate- 
pointed. Corolla regular, from nearly rotate to tubular-fun- 
nelform, blue, white or yellow, rarely purplish. Stamens free 
or adherent, and, in most species more or less declined accord- 
ing to the form of the corolla. Seeds angular or winged, de- 
veloping mucilage when moistened.—Herbaceous plants with 
alternate, pinnate, flaccid leaves, the leaflets or leaf-segments 
sessile and entire. Inflorescence cymose-paniculate or thyrsi- 
form or racemose, except in the first species. 
* Root annual : flowers solitary opposite the leaves. Species 
not typical. 
l. P. xronawTHUM, Benth. in DC. Prodr. ix. 318; Se 
Bot. Cal. i. 499 & Syn. Fl. 1. c. 151.—Like a Gilia in habit, 1 
