142 



PIPTATHERUM— PLATYSTEMOW. 



scales reflexed, lacerate : bracts guitar- 

 form. Ex. 



pnn"^em, (table mountain pine, Tp.) 

 leaves by pairs, short, acute ; cones ovate- 

 conical, spines of the scales long, subulate, 

 incurved, lovi'er ones reflexed. 40-50 f. S. 



ta'do, (M. >).) leaves long, by threes; 

 sheaths long; strobiles oblong-conic, de- 

 flexed, shorter than the leaves; spines in- 

 flexed. Var. hcteroph.i/l"la,\ca.\-es in pairs 

 and threes ; bark smooth. 



paht/'tria, (long-leaved, yellow, or pitch- 

 pine, M. V).) leaves by threes, veiy long; 

 stipules pinnatifid, ramentaceous, pcr.'^ist- 

 ent ; strobiles subcylindric, mnricate. Tim- 

 ber, extensively used in the Southern 

 States. 

 PI'PER. 2—3. {UrUcecE.) [Originally ;jfppuZ, 



in the Bengalese tongue.] 



leposta'chyon, (Florida pepper, 0.) her- 

 baceous, small, leaves obovate, obtu.se, sub- 

 3-nerved, pubescent; spikes axillary, fili- 

 form, erect, much longer than the leaves. 

 6-12 i. S. 

 PIPTATHE'RUM. 3—2. (Graminea.) [From 



pipto, to fall, and t/ieios, harvest, summer.] 



racemo'sum, or nigrmn, (clustered or 

 black seed millet grass, Au. H.) panicle 

 simple ; flowers racemose, ovate-lanceolate ; 

 corolla black, hairy ; awn as long again as 

 the glume. 

 PIS'TIA. 15-8. (Gerania.) 



sprtthnla'ia, (w. Ju.) leaves abruptly nar- 

 rowed into the petiole, dilated, round and 

 obtuse toward the summit. (S. 

 I'l'SUM. 16—10. (Leguminosa?.) 



sati'vum, (pea, p. w. J. @.) petioles terete ; 

 stipules round and crenate at the base ; 

 peduncles many-flowered. Var. umlella- 

 tum, (bouquet-pea,) has the stipules 4-cleft, 

 acute. Var. quadra' turn, (quadrate pea.) 

 fruit ash-color, 4-sided. Y&v.hii'mile, (dwarf 

 pea,) stem erect, not climbing; leafets 

 roundish. Ex. 

 PITCir'ERIA. 16—10. (LeguminoscB.) [In 



honor of Dr. Pifcher of U. S. A.] 



galactoi'dc^, (r. 11) stem erect, rigid, 

 branched, smooth ; leaves trifoliate, oval, 

 obtuse, glandular-dotted beneath. S. Flo- 

 rida. 

 ,iLANE'RA. 5—2. {AmentacecE.) 



nquafica, (M. Ip.) leaves ovate, acute, 

 serrate, equal at the base, slightly scabrous, 

 short-petioled. 25-30 f. S. 



PLANTA'GO. 4-1. (Plantaginea.) [From 

 plantn, the -sole of the foot, so called because 



its leaves are trodden under foot.] 



mn'jor, (plantain, w. J. Z^.) leaves ovate, 

 sub-dentate, sub-glabrous; scape terete; 

 spike oblong, imbricate'. 6-24 i. 



lanceola'ta, (English plantain, ripple 

 grass, J. 2^.) leaves lanceolate ; spike short, 

 ovate-cylindrical; scape angular; capsule 

 2-seeded. 1-2 f. 



virgin"ica, (dwarf plantain, r-y. J. 0.) 

 hoaiy-pubescent ; leaves lanceolate-ovate, 

 sub-denticulate ; spikes cylindric, with re- 

 mote flowers ; scape angular ; cap 2-seeded. 



corda'ta. (w. J. !£.) leaves ovate, cordate, 

 Droad, sub-dentate, smooth ; spike very 

 long;; flowers sub-imbricate, lower 5nes 



scattered; bracts ovate, obtuse ; cells of th*? 

 capsule 2-seeded. 12-18 i. 



mc'dia, [w. J. l^.) leaves ovate, pubes- 

 cent, short-petioled ; scape terete ; spike 

 short, cylindric ; cells 1-seeded. One va- 

 riety has the leaves hirsute and the spikes 

 branching. 



maHti'ma, (sea plantain, Au. 2^.) leaves 

 linear, gi-ooved, fleshy, hairj- near the base, 

 scape round, terete; spike cylindric ; bracts 

 acutish. 6-10 i. 



pusiV'la, (Au. 0.) minutely pubescent; 

 leaves linear-subulate, fiat, entire, acute, 

 scape terete, longer than the leaves ; spike 

 cylindric, loose ; lower flowers distant ; 

 bracts ovate, acute, as long as the calyx. 



cuaiUa'ta, (Ju. 2X-) leaves ovate-cucul- 

 late, sub-denticulate, 9-nerved, pubescent 

 beneath ; spike cylindric, imbricate ; scape 

 terete. 



eriopo'da, {IX.) stemless petioles covered 

 with long wool at the base ; leaves broad- 

 lanceolate, alternate at each end, long-pe- 

 tioled, glabrous, entire, 5-nerved ; scape 

 terete, glabrous, spike cylindric ; flovv'ers 

 remote ; stamens and styles long ; bracts 

 broadovjrte, obtusish ; capsules 2-seeded 

 9-12 i. 



interrup"ia, (Ju. l^.) leaves lanceolate 

 entire, hairy; spike long, slender, inter 

 rupted ; flowers scattered, glabrous. S. 



gla'bra, leaves ovate, denticulate, smooth 

 scape slender, sub-compressed, nearly equal 

 to the leaves ; flowers scattered ; bracts 

 ovate, acuminate. S. 



gnaphaloi'des, (Ju. %.) silky-villose ; 

 leaves lance-linear, very entire; scape te- 

 rete, scarcely longer than the leaves ; spike 

 cylindric, intricate ; bracts linear, with long, 

 villose ciliae. S. 



PLATAN"THERA. 18—1. {OrcMdem.) [From 



platys, broad, anthe'ra, anther, from the width 



of that organ.] 



orbicula'ta, (g-w. J. 2^.) leaves 2, radi- 

 cal, orbicular ; scape with 2 or 3 bract-like 

 leaves, many-flowered ; bracts shorter than 

 the flowers ; lip 1-ance-linear, obtuse ; spur 

 longer than the ovaiy. 12-18 i. 



dilata'ta, (giant orchis, w. or g. J. 2/.) 

 spur shorter than the germ ; lip entire, lin- 

 ear, with the base dilated of the length of 

 the spur; bracts of the length of the flower 

 On mountains the flowers are green, in 

 ■the meadows white. 1-4 f. 



PLATA'NUSr 19—13. (Amentacea) [From 

 pluta, broad, alluding to the size of the tree ] 

 Occident" alls, (buttonwood, American 

 plane-tree, false sycamore, J. 1? .) leaA'es 5- 

 angular, obsoletely lobed, toothed, pubes- 

 cent beneath ; stem and branches becoming 

 white. One of the largest trees in North 

 America. 



PLATYS'TEMON. 12—12. {Tapaveracem.-) 

 [From platus, broad, stemon, strand or fila- 

 ment.] 



califor"niaim, (y-w. ©. leaves half clasp- 

 ing, oblong, linear, obtuse, entire, alternate, 

 3-5-nerved; peduncles axillary, elongated 

 1 -flowered; plant sparsely covered with 

 shaggy, spreading hairs. California. 



