144 



PODOSTIGMA— POLYGALA. 



filiform, floating ; leaves pinnate ; flowers 

 axillary. Attached to rocks and large 

 stones in shallow waters. 



ahrotanoi'den, divisions next to frond very 

 branching; the terminal ones capillary, di- 

 chotomous, many-cleft floral spalhe elon- 

 gated. No root distinct from the stem. S. 

 PODOSTIC'MA. 18—5. {Arocynea.) [From 

 pous, foot, and stis^vm, stigma.] 



pnbes"cen$, (y-g. M. 11.) erect; leaves 

 Imear ; umbels terminal and axillary ; petals 

 erect, longer than the calyx; corpuscle 

 pedicelled. 12-18 i. iS^. 



vi/'idia, (g. and p. M. I(.) erect, leaves 

 oblong, obtn.se, petiolate ; petals large, 

 erect ; umbels generally terminal. 6'. 

 POGO'NIA. 18—1. {Orchidea.) [From a 



Greek word signifjing: heard.] 



ophiofrloasoi'des, (snake-mouth arethusa. 

 "r. Ju. iX-) root fibrous ; scape with 2 di.stant 

 leaves, 1-2-flowered ; leaves lance oval ; lip 

 fringed. 8-12 i. 



verticilla'la, (y-r. J. li.) leaves 5-verticil- 

 late ; flower solitary ; 3 outer segments of 

 the perianth long and linear ; the inner 

 ones lanceolate, obtuse ; lip 3-lobed, dilated, 

 the middle lobe undulated ; root fascicu- 

 late. Swamps. 



dwarica'ta, (p. J. li) root fibrous; scape 

 l-flo\vered, with two distant, lance-oblong 

 leaves; outer petals long-linear, expand- 

 ing; hp sub-3-lobed, crenulate. 18-24 i. *S'. 

 POLANJS"IA. 12—1. (Cappaiides.) 



gravco'Ieiis, (false mustard, r. w. Ju. 0.) 

 viscid-pubescent ; leaves ternate ; leafets 

 elliptrcal-oblong ; flowers generally dode- 

 candrous. 1 i. 



tenuifo'lid, viscid-glandular; leaves 3-fo- 

 liate, nearly glabrous ; leafets filiform-linear, 

 longer than the petiole ; petals very une- 

 qual, Bub-orbicular, entire, on short claws ; 

 stamens 9-11 ; style longer than the ovary ; 

 pods linear, terete, minutely reticulated, 

 glabrous. Georgia. 

 rOLEMO'NIUM. 5—1. {Polemonia.) [An 



ancient name derived from polemos, war, 



because, according to Pliny, kings contend- 

 ed for the honor of lis discovery.] 



rep" tans, (Greek valerian, b. M. 2^.) 

 leaves pinnate, leafets 5-13 ; flowers termi- 

 nal, nodding. 

 POLYCAR'TON. 3—3. {Amaranthi.-) [From 



"polus, many, and karpos, seed or fruit.] 



tetraphyVlum, (w. J.) leaves opposite 

 and in four.s, obovate, obtu.se, entire, 

 glabrous, narrowed at the ba.se ; calyx 

 persistent; capsule ovate, 1-ceiled; stem 

 branching, glabrous, striate, knotted. 3-6 

 i. S. 

 POLVCNE'MUM. 3—1. {Atriplices.) [From 



pnluit, and kneme, a leg or knee, from the 



number of jointed branches, or joints of the 



stem.] 



america'niim, [li-] cespito.se; leaves con- 

 nate, crowded, subulate, 3-angled, rather 

 pungent ; flowers terminal. S. 

 POLYAN"THES. 6—1. {(Narcissi.) [From 



polus, many, and anthos, flower, because it 



bears many flowers. 



tiihcro'sa, (tuberose, 24^.) flowers alter- 

 oate, in pairs, rootlets tuberous; scape scaly ; 

 leaves linear, long ; sweet-scented. Ex. 



The polyanthus of the gardens belongs to 

 the genus Primula. 



POLYG'ALA. 16—6. {Lrguminosa.) [From 

 polus, nmch, and gala, milk, from its mi]k> 

 juice.] 



jmvcifo'Ua, (flowering wintergreen, r 

 M. li.) small, large-flowered ; stem simple 

 erect, naked below ; leaves ovate, acute, 

 glabrous, near the top of the stem ; flowers 

 crested, terminal, about in threes. 3-4 i. 



sen"ega, (seneca snake-root, mountain- 

 flax, r.^or w. J. li.) stem erect, simple, 

 leafy ; leaves alternate, lanceolate ; spike 

 terminal, iilifomi ; flowers alternate, not 

 cre.sted. Var. al'bida, leaves lanceolate or 

 oval ; spike somewhat crowded ; flowers 

 white, sub-ses.sile. 8- 14 i. 



polyg"ama, (ground-flower, p. J. li) 

 stems numerous ; leaves linear-oblong, al- 

 ternate downwards ; racemes terminal and 

 lateral, elongated ; flowers sessile ; radical 

 racemes procumbent, with apterous flowers. 

 4-8 i. 



purpu'rea, (r. Ju. j©.) .stem fastigiately 

 branched ; leaves alternate, oblong linear ; 

 flowers beardless, imbricated in obtuse cy- 

 lindrical spikes; rachis squarro.se; wings of 

 the calyx cordate, ovate, erect, twice as 

 long as the capsule. 12-18 i. Woods and 

 hillsides. 



lu'tca, (yellow milkwort, y. S. $ ) stem 

 simple or branched ; lower leaves spatu- 

 late, upper ones lanceolate; flowers in glo- 

 bular heads ; wings of the calyx ovate, mu- 

 cronate ; bracts shorter than the flowers. 

 8-16 i. Pine baiTens. 



incarna'ta, (r. J. %.) stem nearly simple, 

 erect, glaucous ; leaves scattered, subulate -^ 

 spikes oval, oblong ; tube of the corolla 

 long, slender. S. 



sanguiii"ea, (r. Ju. ^.) erect; branches 

 fastigiate ; leaves linear ; spikes crowded ; 

 flowers not fimbriated ; rachis squanose. 

 12-18 i. 



verticilla'ia, (dwarf snake-root, w. J. 0.) 

 erect, branching ; leaves ^vhorled and scat- 

 tered ; spike filiform, peduncled ; flowers 

 distinctly alternate, approximate, ci'ested ; 

 calycine wings shorter than the fruit. 6-8 i 



amhig"ua, (p. %) erect ; leaves linear, 

 lower ones verticillate, the rest scattered ; 

 spikes acute, long-peduncled ; flowers cris- 

 tate ; calycine wings round and veined, aa 

 long as the fruit ; bracts deciduous. 



cmcia'ta, [v. g. Ju. ^) stem fastigiate , 

 wing-angled ; leaves verticillate in fours 

 linear-oblong ; flon-ers in spiked sessile 

 heads. 8-12 i. 



corymho'sa, (g-y. Ju. 21.) stem erect, 

 terete, nearly naked ; lower leaves long, 

 linear-lanceolate, stem leaves subulate, 

 minute near the summit ; racemes cor- 

 ymbed ; rachis squarro.se. 2-4 f 



seta'cea, (Ju. ©.) stem .setaceous, nearly 

 leaHess, simple, sparingly branched near the 

 summit; leaves small, setaceous, scattered-, 

 flowers minute, in a compact spike. S. 



viridis"cens, (g-y. Ju.) stem simple ; leaves 

 cuneate, obovate, obtuse ; head cylindric, 

 squarrose ; calj'cine wings conspicuou.sly 

 acuminate. 1-4 i. S. 



baldwin"ia, (y-w. Ju.) stem slightly an 



