84 TOLYGALACE^E. (.MILKWORT FAMILY.) 



10. P. incarnata, L. Stem often simple, glaucous ; leaves seattcred, lin- 

 ear, fleshy, sometimes minute and subulate ; spikes lanceolate, acute, dense- 

 flowercd ; petals united into a tube which is twice as long as the elliptical 

 wings, conspicuously crested ; caruncle spongy, as long as the stalk of the 

 oval hairy seed. — Dry sandy soil, Florida to Mississippi, and northward. June 

 - August. — Stem 1°- 2° high. Bracts deciduous. Flowers and often the racliis 

 purple. 



11. P. setacea, Miobx. Stems simple or sparingly branched, slender; 

 leaves minute, scale-like ; spikes oblong, dense-flowered, acute ; wings oblong, 

 acute, as long as the petals ; caruncle and seeds as in No. 10. — Low pine bar- 

 rens, Florida to North Carolina, and westward. May -July. — Stem 1° high. 

 Spikes h 1 - 1' long. Flowers pale rose-color or whitish. Bracts deciduous. 



* * * Spikes solitary : leaves whorled : JJowcrs purple. 



12. P. cruciata, L. Stem erect, 4-angled, simple or branched; leaves 

 in fours, linear or oblong-linear, thick, obtuse, the upper ones alternate ; spikes 

 large, ovate, becoming cylindrical, shoit-peduncled ; wings ovate, tapering into 

 a long subulate point ; lobes of the caruncle linear, collateral, as loug as the 

 smoothish oval seed. — Pine-barren swamps, Florida to Mississippi, and north- 

 ward July - Oct. — Stem 6'- 12' high. Spikes l'-2' long, 3' thick. Flowers 

 pale rose-color. Bracts persistent. 



13. P. brevifolia, Nutt. Stem weak, 4-angled, with long and spreading 

 branches ; leaves thin, lanceolate or linear, acute, the lower ones in fours ; spikes 

 small, ovate, long-peduncled ; wings lanceolate-ovate, ban lv pointed] caruncle 

 as long as the obovatc hairy seed. — Bogs, Florida and northward. July- 

 Oct — Stem l°-li° long. Spikes scarcely half as large as in the preceding. 

 Flowers reddish-purple. Bracts persistent. 



14. P. Hookeri, Torr. & Gray. Stems short, weak, much branched, 4- 

 angled; leaves in fours, short, linear, acutish; spikes long-peduncled, ovate- 

 lanceolate, acuminate, loose-flowered; wings erect, lanceolate-ovate, acute; 

 caruncle as long as the ovoid sparse-hairy and viscid seed. — Low grassy 

 pine barrens, West Florida and westward. July -Sept. — Stems 6'- 10' high. 

 Leaves 4"-G" long; those of the branches mostly alternate. Flowers pale 

 rose-color. Bracts persistent. 



§ 2. Flowers in slender meatus or spikes. 

 * I. < tins d/lt mute. : piriiiniuis or Unwinds. 



1">. P. grandiflora, Walt. Pubescent) stems branching; haves Lanoeo* 



late; flowers huge, crestlcss, scattered in long racemes ; fruiting pedicels droop- 

 ing J wings large, orbicular, erect ; caruncle enclosing the stalk of the oblong 

 hairy seed. (P. pubescensi Muhl.) — Varies with smoothisb linear leave.-, and 



smaller dowers. (P. Ilabelhita, Sliuttl.) — Dry light Boil, Florida U) South Car- 

 olina, and westward. July-Sept U — Stem 1° high. Racemes 3'-6'long, 

 often lateral by the prolongation of the stem, flowers bright purple, turning 

 greenish 



K>. P. polygama, Walt Smooth; stems numerous, simple; leave- 

 oblong-linear, the lowest ipatulate or obovatc; flowers of two kinds, viz. one 



