102 MONOECIA. PENTANDRIA. 



Fl. Middle of August. Fr. mat. Last of September. 



Hah. Gardens; barn-yards; Indian cornfields, &c: common. 1 to 3 feet high: plant pale green. 



Ohs. I have never had any doubts of this species; and yet our plant is usually very much branched- Th'e 

 stems break off near the ground in the beginning of winter, and the plants roll about before the winds. 



A. HYBRiDus. EIL Racemes pentandrous, decompound, clustered, erect; leaves lance ovate. 

 Fl- Latter end of August. Fr. mat- Beginning of October. 



Hab. Gardens; cultivated lots, &c. common. 2, to 4 or 5 feet high. 



Ohs- A homely, unwelcome weed, in our gardens, &c.— I think it probable we have some other species 

 of this geni^, which are not cultivated — though I have not ascertained them. 



ORBlSIl, KSXANDRZA. 



327. ZIZANIA. Niitt. Gen- 747. 

 [An ancient Greek name, of obscure etymology.] 



Male, Cah 0. Cor. glume 2 valved, awnless; sometimes intermixed with the female flowers. 



Fem. Cal. 0. Coj-. glume 2 valved, cucullate, awned. &7i//£ 2 parted. .Setd 1, invested by the corolla. 



Z. AQUATiCA. Ell- Panicle pyramidal; male flowers below, spreading; female above, spiked; awns long. 

 Synon. Z- clavulosa. Mx. Vulgo—WM Rice. Indian Rice. Water Oats. Reed. 



Fl- Latter end of August. Fr- mat. Latter end of September. 



Jfab- Rivulet, near Marshall's Mill, on Brandywine: rare. 4 to 6 feet high. 



Ohs- The male flov/ers, and fruit, caducous: the pedicels of the female flowers enlarged, or clavate. 

 I have only met with this plant in one spot, a few rods west of Marshall's Mill, south side of Brandywine 



328. SAGITTARIA. Nutt. Gen- 750. 

 [Lat. Sagitta, an arrow; the leaves resembling the head of an arrow.] 

 Male, CaZ. 3 leaved. Cor. 3 petalled- iSiamens numerous, 20 to 30. 

 F£M. Cal. 3 leaved. Cor. 3 petalled. Capsules many, aggregate, 1 seeded. 



S, sAGiTTiFOLiA. Ell- Leavcs ovate, sagittate, lobes lance-ovate; bractes acuminate, glabrous. 



Synon. S- latifolia. JFllld- Ftt^ffo— Arrow-head. 



Fl- Beginning of August, and after. Fr. mat- Beginning of October. 



Hab. Swamps; and spring heads: frequent. Scape 9 to IS inches high: flowers white. 



Obs. This is a large-leaved, glabrous species; and, I think, quite distinct from the following. 1 have 

 foun.d a number of fleshy tubers attached to the roots,— some of them the size of a goose-egg,— which were 

 mild to the taste, and I have no doubt would be esculent, and nutritious, if properly cooked. Hogs are 

 v$ry iond of rooting after those tubers, in the spring of the year. 



S. PUBEscEvs. Ell- Leaves lance-oblong, lobes lanceolate; bractes ovate, obtuse, pubescent. 

 Fl- Middle of July, and after. Fr. mat- Latter end of September. 



Hub. Swamps; ditches, &c. frequent. Scape 6 to 12 inches high: flowers white. 



Obs. Mr. NTuttall thinks this is nothing more than a variety of the preceding: if so, it is certainly a 

 •jfrongly marked one. The plant is constantly smaller,— the leaves narrower, with long, narrow, lanceo- 

 late lobes— the bractes roundish-ovate, and, with the scape, quite pubescent; whereas thq bractes ot the 

 other have a long acumination, and are glabrous. 



329. EUPHORBIA. Nutt- Gen. IIZ. 

 [Dedicated to £M2)/jor6t(s; an ancient Greek Physician.] 



Involucre caliciform, segments often petaloid: Male florets attached to the involucre. 

 Fem. central, solitary, pedicellate. Cal. 0. Cor- 0. Styles 3, bifid. Caps- 3 grained. 



E. HVPERiciFOLTA. Ell Glabrous; divaricately branching; leaves oval-oblong, serrate, sub-falcate. 



Fti/^o— Eye-bright. Spurge. 



Fl- Latter end of July, and after. Fr- mat- Beginning of October. 



Hab- Fields; roadsides, &c. common. 9 to 18 inches high: flowers %vhite, small. 



Obs- It seems difficult to determine to M'hichC/ass and Orrf«r, of the Sexual System, this genus jno.-Jt 

 appropriately belongs, I have, however, concluded to arrange it here, tor the present. 



