528 



MONOECIA POLYANDRIA 



formed of the indurated stigma, and 2 (sometimes more 1 ) shorter divaricate on*i 

 towards the base. 



Uab. Brandy wine, Schuylkill, & their tributaries : frequent. Fl. Junejuly . Fr. Au-\ 



Ob*. Collected by Mr. Joshua Hoopes, in 1828. There is another species eng. 

 mo rated in the U. States, by Messrs. Nut tall alid Eatwi ; but I do nut find it nica. 

 tioued by any other American Botanist. 



425. SAGITTAKIA. L. Jfutt. Gen. 750. 

 [Latin, Sagitta, an arrow ; from ih<; prevailing form of the leaves] 



Stami* ate Fl. Perianth deeply 6-parted, the 8 outer segments sep* 

 aloid, persistent, the 3 inner ones petaloid, deciduous. Pistillate 

 Fl. Perianth as in the staminate flower. Ovaries superior, numer- 

 ous, collected in a globose head. Carpel* compressed, margined, 

 1 -seeded, not opening. 



Herbaceous aquatics : leaves radical, mostly sagittate; flowers verticillate in 

 throes near the summit of the scape, the staminate ones above. Nat. Ord. 229, 

 Lindl. Alismacbjb. 



1. 8. sagittifolia, L. var. latifolia, MuhL Smooth; leaves broad- 

 ovate, mostly acute ; scape simple; bracts ovate-lanceolute, acuminate. 

 Beck, Hot. p. 377. 



S. sagittifolia. Mx. Am. 2. />. 189. Pursh ? Am. 2. p. 395. Bigel. 

 Bost.p. 344. FloruL Ctstr. p. 102. 



S. latifolia. tVUUL Sp. 4. p. 409. Pen. Syn. 2. p. 563. Not 1 of 

 Pursh. 



Ahuow-lf.avei) Saotttarta. Vulgo — Arrow-head. 



Root perennial, bearing large oval fleshy tubers I to 2 or 3 Inches in diameter. 

 Leaves all radical, 3 or 4 to 10 or 12 inches long (including the lobes), and I or 2 

 to 6 inches wide, more or less ovate, mostly acute, sometimes obtuse, or with % 

 very short abrupt acumination, nearly or quite smooth, entire, with a minute 

 denticulate roughness on the margin, sagittate-lobed at base, the lobes about 

 as long as the body of the leaf, and nearly half as wide, ovate-lanceolate, more 

 or less acuminate, somewhat diverging, the inner margin curved or convex ; petu 

 oles 4 to 12 or 15 inches long, rather stout, tapering upwards, smooth, Scape 9 U) 

 18 inches high, simple, smooth. Flowers in numerous pedicellate bracteatc ver- 

 ticils ef 3, the staminate* ones above; pedicels 1 fourth to half an inch long: 

 bracts membranaceous, smooth, varying from lance-ovate with a long slender 

 acumination, to linear-lanceolate and acute. Inner segments of the perianth (or 

 petals) white, orbicular, thin and deciduous. Fertile flowers with the ovaries in 

 depressed-globose heads,— when in fruit 1 half to 2 thirds of an inch In diameter. 



Var. d. pubescens, Torr. Pubescent ; leaves ovate, rather acute ; 

 bracts roundish ovate. Beck, I. c. 



S. pubescens. MuhL Catal. p. 86. Mitt. Gen. 2. p. 213- Ell. Sk. 

 2. p. 590. FloruL Cestr. p. 102. Eat. Man. p. 316. 

 8. latifolia. Pursh ? Am. 2. p. 396. 



Generally smaller than the preceding variety, with the leaves, scape, pedicels 

 and perianth pubescent,— the pedicels longer and more slender (the lower ones 

 about an inch long). 



Hah. Ditches, and swampy springs : frequent. Fl. July— Aug. Ft. Sept— Octo. 



Obs. This plant presents so many varieties, that it is difficult to determine 

 which are species, D, Townshnd, Esq. has collected one, in this vicinity, with 



