]'o/;/yala. l'( »1.V(- ALACK.K. 459 



Louisiana, and Arkansas ; fl. March to June. Var. humillima, Chodat, 1. c. 200, is merely 

 the must dwarf furiu (or perliajis stale) with iutluresceuces suli»eii»ile among the rudiial 

 leaves. 



= = Wings ovate-oldong or elli|)tic-ol)long with sliort sliarp ajiiral cusp: keel with a hliort 

 crest: stems (mostly 8 inches tu a foot or more in height) leafy. 

 P. lutea, L. Annual, erect, 6 to 15 inches high: stems often several from a suhfilirous 

 root, simple or witii a few sj)readiiig branches near or aliove the middle : cauline lea\eM ol»- 

 long-laneeolate, acute ; liie lower and radical ones passing to si):itulate or even olwivate- 

 cuueate with rounded ai)ex : tlowers in iiroad <lense ohtn.HC or (through the pmjecting 

 innermost bracts) cuspidate long-j)ednncled capitate racemes, suli)hur yellow or omnge, not 

 turning dark in drying : wings hecoming 3 J lines in Icngtii and li lines in breadth : crest of 

 the keel of 6 or 8 short processes (half line or less in length), the ujiper (dorsal) ones nither 

 broad and not filiform: seed wilh a slender caruncle most often of nearly its own length. — 

 Spec. ii. 705 ; Torr. & (iray, Fl. i. 127 ; Chapm. Fl. 8.{ ; Meehan, Native Flowers, ser. 2, ii. 

 123, t. 31 ; Wheclock, 1. c. 115; Chodat, 1. c. I'J", t. 22, f. 32-35. /'. Psciitloseiieiju, liertol. 

 Bot. Miscel. xv. 21, t. 3, f. 2 (Hot. Zeit. xiv. 784), ace. to Gray. — Sandy soil, low pine wootls, 

 &c., Long Island, New York, and S. V.. IVnnsylvaiiia, to Florida, Mississijij)!, and (ace. to 

 Lus(|uereux) Arkansas; 11. Ajjril lo July. 



P. Rugelii, SiUTTL. In technical characters very dose to tlie preceding: taller, a foot or 

 two in height: stems simple or with a few simple mostly erect branches: inflorescence ovoid 

 becoming oblong: flowers somewhat larger (wings becoming fully 2 lines in breadth), 

 lemou yellow, turning dark bluish green in drying: cre.st of the keel a little over half line 

 in length, the proccs.scs subfiliforni, often bifid : .seeds essentially a.s in the la.st. — Shuttl. in 

 Chapm. Bot. Gaz. iii. 4, & Fl. ed. 2, 613; Wheelock, L c. 114;' Chodat, 1. c. 198. P. /%- 

 noldscE, Chapm. Fl. ed. 2, 613. — Low ground, Florida; fl. May to September. 

 •H- ++ Racemes numerous and coryinbosely arranged in a terminal many-branched inflores- 

 cence : flowers small but showy. 



= Basal leaves rosulate, elongated, attenuate; the cauline much reilncod. 



P. Cymdsa, Walt. Root a fascicle of long slender fibres : .xtems single, erect, large, fista- 

 lose, 1 to 3 feet or more in height : radical leaves linear, attenuate, 3 to 6 inches long, yel- 

 lowish green : racemes at first dense l)ut soon somewhat lax : flowers rather small, yellow- 

 becoming greenish black in drying: wings abru))tly cuspidate from an obtu.xe or roumled 

 apex : seeds small, subglobose, acutish at the apex, glabrous ; caruncle obsolete. — Car. 

 179 ; Torr. & Gray, Fl. i. 128, 670 ; Chapm. Fl. 82 ; Wheelock, 1. c. 112 ; Chodat, 1. c. 201, 

 t. 23, f. 1-3. P. cori/7nbosa, Michx. Fl. ii. 54, in ])art. P. (jramlneifolia, Poir. Diet. v. 500. 

 P. atfemidta, Nutt. Gen. ii. 90. P. arulifolia, Torr. & Gray, i. 128. — ISIarshy jdnces and 

 margins of ponds in ])in(' barrens, &c., Dcliiware, Cfiiihi/, to Florida and Louisiana; fl. June 

 to September. 



= = Stems leafy : radical leaves obtuse or obtusish. 



P. ramosa, Ell. Fibrous-rooted annual, 8 to 15 inches in height: .stem not enlarged be- 

 low, in mo.st specimens equably leafy to the inflorescence: leaves half inch to inch and a 

 half in length; the cauline oblong, acute; radic;il s])atulate, obtuse: flowers slender-pedi- 

 celled, in size and arrangement much as in the last ])receding species, also yellow ami turn- 

 ing green or black in drying: wings more gradually acuminate: seed small, dark brown, 

 soft-pnberulent, and with a minute bifid terminal caruncle. — Sk. ii. 186; Cha]im. Fl. 82; 

 AVheelock, I.e. 112; Chodat, 1. c. 202, t. 23, f. 4, 5. P. ci/nwsa, Poir. Diet. v. .500, not 

 Walt. P. ronjmhosa, Nutt. Gen. ii.89; Torr. & Gray. Fl. i. 128; not Michx. — Sandy hills, 

 also low pine barrens, &c., with same range as the ]ireceding, but westward to Texjis, 

 I.rdvrntrorth, ace. to Wheelock, 1. c. 113; fl. niidsuininer. 



P. Baldwini, Nrxx. Stature, habit, and foliage as in the preceding : stem strongly angled : 

 flowers somewhat larger (lanceolate acnininate wings 2 lines in length), white, short- 

 pedicelled or subsessile in dense corynibosely arranged heads, fnigrant. in typiciil form dry- 

 ing yellowish white. — Gen. ii. 90;"f11. Sk! ii. 187 (lialdnlni); Chod:it. 1. c! 203. t. 23. f. 6, 

 7. P. Bnldwiuii, Torr. & Gray. Fl. i. 128 ; Wheelock, 1. c. 113. — Moist sandy soil, in pine 

 barrens, &c., Georgia to S. Florida, westward to Mississippi, Tracij ; fl. midsummer. Var. 



