VOLTGALACEiE. (jIILKWOUT FAMILY.) 83 



3. P. Baldwinii, Nutt. Stem angled, simple ; leaves alternate, lanceolate, 

 acute, llie lourst spatulutc ; corymbs compound ; spikes dense ; wings ovate- 

 lanceolate, tapering into a long and slender point ; seeds very small, gloliose, 

 hairy; caruncle minute. — Low pine ban-ens, Georgia, Florida, ami westward. 

 July and August. — Stem 1°-U° liigli- Leaves V- 1' long. Flowers white, 

 fragrant. 



* * Spikes solitary : leaves alternate. 

 ■*- Flowers yellow : bienniuls. 



4. P. lutea, L. (Yellow Bachei.or's-Button.) Stem simple or with 

 spreading branches ; leaves lanceolate, acute, the lowest clustered, spatulatc- 

 obovate, obtuse ; spikes dense, globose or oblong ; wings elliptical, abruptly 

 pointed ; loI)cs of the caruncle nearly as long as the obovatc sparse-hairy seed. 

 — Low pine barrens, Florida to Mississippi, and northward. Junc-Auguat. — 

 Stem 6' -12' high. Flowers orange-yellow. 



5. P. nana, DC. Low ; stems divided at the base into .'•evcral short pc- 

 dunclc-like branches ; leaves chiefly radical, clustered, spatulate or linear, obtuse ; 

 spikes tiiick, at length cylindrical, the earliest ones sessile ; wings ovate-lanee- 

 olate, acuminate ; lobes of the caruncle half as long a.s the obovate hairy seed. 

 (P. viridescens, Nnlt.) — Low sandy pine barrens, Florida to South Carolina, 

 and westward, flowering throughout the year. — Stems 2' -4' high. Spikes 

 1 ' - 2' long. Flowers yellow. 



■*- ■*- Flowers purple or rose-color : annuals: stems hranrhinrj. 



6. P. sanguinea, L. Leaves oblong-linear, acute ; spikes ovate or round- 

 ish, obtuse ; flowers imbricated; wings broadly ovate, obtuse, ccssilc: lobes of 

 the caruncle rather sh.orter than the pear-shaped sparse-hairy seed. (P. pur- 

 purea, Nnlt.) — Low grounds. North Carolina and northward. July -Sept. — 

 Stems 1° high. Flowers reddish-purple. Bracts persistent. 



7. P. fastigiata, Xutt. Stems slender, at first simple; j'javcs naiTow- 

 linear, acute ; spikes globose, obtuse ; wings oblong-obovate tapering into a dis- 

 tinct claw at the base ; caruncle as long as the stalk of tiic sparse-Iiairy pear- 

 shaped seed. (P. sanguinea, Torr. ^- Graij.) — Low pine barrens, Florida to 

 North Carolina, and westward. July-Oct. — Stems lo'-l.'/ higli. Leaves 

 erect. Flowers small, bright rose-color. Bracts deciduous. 



8. P. IDTuttallii, Carey. Leaves short, linear, obtuse ; ."^plkes oblong, 

 acute, dense; wings short, elliptical, slightly clawed; lobes of ll:o caruncle col- 

 lateral, one third as long as the obovate very haiiy seed. (P. ranguinea, Nutt. 

 P. arabigua, Torr. Sf- Graij.) — Dry sandy soil. North Carolina v.vA northward. 

 August. — Stem 4'- 8' high, the branches fastigiate. Spikes a:;d greenish and 

 pui-ple flowers smaller than in No. 7. Bracts persistent. 



9. P. Chapmanii, Torr. & Gray. Stems slender, at leng'Ji sparingly 

 branched ; leaves scattered, naiTow-linear, acute ; spikes long, lanceolate, acute, 

 loose-flowered ; wings obovatc, short-clawed ; Io1k;s of the caruncle sjireading, as 

 long as the stalked base of the pear-shaped very hairy seed — Low pine baiTcns 

 near the coast. West Florida and westward. June -August — Stems l^-l^" 

 high. Spikes 1'- 2' long. Flowers bright-purple. Bracts persistent. 



