214 ORDER 83. PLUMB AGLNACE^E.* 



eluded. Ovary 2-(4-) celled. Pyxis membranous, opening below the middle 

 by a lid, when the loose dissepiment falls out with the seeds. Herbs acau- 

 lescent. Fls. small, whitish, hi a slender spike raised on a scape. 

 Flowers uniform ; stamens exserted in all of them. . .(a) 

 Flowers dimorphous, the anthers included in most of them. . .(5) 



a Seeds 716. Leaves broadly ovate, 7-veined. Spike dense No. 1 



a Seeds 4 only. Leaves oblong or cordate, 3- 7- veined Nos. 2, 3 



a Seeds 2 only. Leaves lanceolate. Scape tall. May October Nos. 4, 5 



a Seeds 2 or 4. Leaves linear, fleshy No. (i 



b Corolla lobes permanently spreading. Seeds 2, concave Nos. 7, 8 



J Corolla lobes closing, and erect on the fruit. Summer Nos. 9 11 



I P. major L. Common P. Leaves ovate, some toothed, smoothish, palmately 7- 



veined, ample; spikes 1 3f high, v Door-yards: common. Long white elastic 

 fibres are drawn from the veins when the leaf is plucked. 



ji P. K.amptscha.tlca Cham. Leaves elliptic- oblong, obtuse, 3-5-veined ; spikes 

 loose-flowered; bracts acute, shorter than the sepals. Ala. (P. Rugelii C-B.) 



3 P. cordata Lam. Lvs. ovate, cordate or very abrupt at base, obscurely toothed, 



subpinnately 5-7-veined ; fls. loosely spicate, larger than in No. 1 ; the bracts ovate, 

 obtuse. 71 Along streams, Can. Wis., and S. As large as P. major. June, July. 



4 P. lanceolata L. Lvs. lanceolate, pointed at each end ; scape angular, longer than 



the leaves ; spike dense, ovate or cylindric, brown, y. Meadows. 1 2f. 



5 P. spars! flora MX. Leaves lanceolate or oblong, pointed each way ; scape terete, 



longer than the leaves ; spike long, loose, interrupted. S. and S-W. 618'. 



6 P. niurit i ma L. /3. juncoide*. Leaves linear, glabrous, fleshy, nearly aa long as 



the slender scape ; spike loose, bracts roundish. Coast, N. J., and N. 4 12'. 



7 P. aristata MX. Lvs. linear, woolly at base, smoothish above ; scape longer ; spike 



dense ; bracts long, rigid, awn-like (5") ; petals round-cordate, spreading, conspicuous ; 

 seeds 2, boat-shaped. Prairies, 111. 610'. June, July. (P. Patagonica, 0. (Gray.)) 



8 P. gnaplmloides L. White-woolly; Ivs. oblong to linear; spike dense, exceed 



ing the Ivs. ; bracts deltoid, not exceeding the calyx. Wis. to Tex. 3 &. June, Jl. 



9 P. Vlrginica L. Hoary pubescent ; Ivs. elliptical, 3-5-veined ; scapes and spikes 



elongated, dense-flowered ; cor. closed on the pod, erect ; seeds rarely more than 2 ; 

 bracts shorter than the cal. Dry hills and rocks, Conn., W. and S. 5 1(X. May Sept. 



1 P. heterophylla N. Lva. linear, entire, or some of them with a few slender 

 teeth ; ped. many, as long as the leaves ; spikes loose ; pod conoid, twice longer than 

 the calyx, crowned with the closed cor., 10-24-seeded. @ Wet. Penn., and S. 4 8'. 



I 1 P. pusilla. N. Thinly pubescent ; Ivs. filiform-linear, shorter than the capillary, 

 few-flowered scapes ; pod crested, longer than the calyx, 4-seeded. Conn. (Mr. 

 Bowles), W. and S. 13'. Seeds oblong. May July. 



ORDER LXXXIII. PLUMBAGINACE^E. LEADWORTS. 



Herbs or undershrubs with the leaves alternate or all clustered at the 

 root. Flowers regular. Calyx tubular, 5-toothed, plaited, persistent. Co- 

 rolla hypocrateriform, of 5 petals united at base, or sometimes almost dis- 

 tinct. Stamens 5, hypogynous and opposite the petals, or inserted on their 

 claws. Ovary 1-celled, free from the calyx. Styles 5 (seldom 3 or 4). Fruit 

 a utricle, or dehiscent by valves, containing 1 anatropous seed. 



I. STATICEJ5. Styles distinct, at least above. Utricle not valvate. Leaves radical... (a) 



11 PLUMBAGINE^E. Style 1, with 5 stigmas. Pod subvalvate. Leaves cauline. . . (6) . . PLUMBAGO. S 



a Stigmas filiform. Styles glabrous. Scape branching STATICE. 1 



a Stigma* filiform. Styles plumotu. Scape capitate AKMKRIC 2 



