PQ:t4TGAl.A0iL«, (stJl^KWORT FAMILY.) 121 



§ 2. Annuals, with all the leaves, qltemate i jWwers in splices, heacl$, or racemes termi- 

 nating the stem or branches, purph or rose-edor, in summer : none siAterranean. 



♦ Corolla conspicuousljf crested, on the keel ; the claws of the true petals united into a 



long and slender cleft tube much surpassing the wings- 

 S. F. incaru£^ta, !/■ Glaucous; stem slender, sparingly branched; leaves 

 minute and linear-awl-shaped; spike cylindrical; flowers flesh-color; caruncle 

 Iflnger than the narrow stalk of tjhe hairy seed. — Pry soil, Penn. to Wisconsii^ 

 and southward ; rather rare. 



* » Corolla rrtit>utely or inconspicuously (rested; the true petais not longer but mostly 



shorter than the wings : seed peixr-shaped, 

 i. P, sanguiuea, L, Stem sparingly braI^cl^cd above, leafy to the top ; 

 leaves oblong-linear; heads globular, at length oblong, very dense (4" -5" thick), 

 bright red-purple (rarely palpr qr even white) ; pe(Jicels pcarcely any ; wings 

 broadly ovate, closely sessile, louger than the pod ; the 2-parted ccfruficle almost 

 eqfialling the seed. — Sandy and moist ground : common. 



5. P. f^tigi^tai Nutt. Stem slender, at length corymbosely branched ; 

 leaves narrowly linear, small ; spikes short and dense (3" in diameter) ; the small 

 rose-purple flowers on pedicels of about the length of the pod; wings obovate- or 

 oval-oblong, narrowed at the base, scarcely exceeding the pod ; bracts deciduous 

 with the flowers or fruits ; caruncle as long as and nearly enveloping the stalk- 

 like base of the minutely hairy seed. (P. sanguinea, Torr. ^ Gr., excl. syn. ; 

 not of Nutt., nor L.) — Pine barrens of New Jersey (Nutlall) and Delaware 

 tp Jfentucky and southward. 



6. P. Nutt&llii, Torr. & Gr. (i^V. !,;>. 670, excl. syn. & descr.) Resembles 

 the last, but usually lower ; spikes more cylindrical ; flowers duller or greenish 

 purple, on shorter pedicels ; the awl-shaped scaly bracts persistent on the axis after 

 the flowers or fruits fall ; seed very hairy, the caruncle smaller. (P. sanguinea, 

 Nutt., not of L. P. Mariana, &e., Pluk. t. 437. P. ambigua, Torr. Sr Gr. FL, 

 not oi Nutt.) — Dry sandy soil, coast of Massachusetts to Kentucky and south- 

 ward. — Spike sometimes rather loose. 



7- P. Curtissii, n. sp. Slender (9' high) ; leaves, &c., as in the two pre- 

 ceding ; flowers rose-purple, in elongated and loose racemes ; the ascending pedicels 

 and the nairow oblong erect wings fuUy twice the length of the pod; bracts persistant, 

 those of the lower and remoter flowers foliaceous ; caruncle small, on one side 

 of the stalk-like base of the very hairy seed, which is conspicuously apicidate at 

 the broader cnrf. — Near Alexandria, Virginia, A. H. Curtiss. — Mopt related to 

 P. Chapmanii of Florida. 



§ 3. Annuals with at least the lower stem-leaves whorhd in fours, sometimes in fives .• 

 spikes terminating the stem and branches ; fl. summer and autumn. 



# Spikes short and thick (4" - 9" in diameter ; the axis rough with the squarrose bracts 



persisting after the fall of the (middle-sized) rose or greenish purple flowers : crest 



of the keel small. 

 8. P. cruci&,ta, L. Stems (3' -10' high) almost winged at the angles, 

 with spreading opposite branches ; leaves nearly all in fours, linear and some- 

 what spatulate or oblanceolate ; spikes sessile or nearly so, wings broadly deltoid- 

 ovate, slightly heart-shaped, tapering to a bristly point, or rarely pointless; carunclq 



