518 MONOECIA MONAKDRIA 



times dichotomous, the terminal subili vision often trichotomous,— the inflores- 

 cence, altogether, somewhat corjmbose ; bracts, or leaves at the subdivisions of 

 the branches, small, ovate-oblong, sessile, or subsessile, smooth ; petaloid segments 

 of the involucre milk-white, rather large and quite conspicuous, obovate. Cap- 

 sule rather small, smooth. 



Hob. Sandy banks, and fence-rows: frequent. Fl. August. Fr. Sept— Octo. 



06s. This neat, and rather pretty species, varies considerably in size,— espe- 

 cially in the length and width of the leaves. 



5, E. wemoralis. Leaves lance-oblong, rather acute, narrowed at 

 base, sub.scssile, entire, pilose beneath; umbel 5 to 8-raveJ, the rays 

 once or twice dichotomous ; bracts broad-ovate ; petaloid segments of 

 the involucre dilated, subreniform ; ovary vcrrucosc. 

 E. pilosa ? Pureh, Am. 2. p. 607. Beck, Bot. p. 313. Eat. Man. 

 p. 143. Not of mild. Pers. &c. 



Wood Euphorbia. 



Root perennial. Stem 2 to 3 feet high, rather stout, erect, smooth, simple, or 

 often with a slender peduncle-like branch from the axils of the leaves. Leaves 

 3 or 4 inches long, and about an inch wide, alternate, lance-oblong, and oblance- 

 olate-oblong, rather acute, sometimes obtuse, more or less tapering towards the 

 base, sessile, or subsessile, very entire, the upper surface smooth, the under sur- 

 face pale, or subglaucous, softly (and often sparingly) pilose. Heads of florets in 

 a terminal umbel of 5 to 8 rays, or vcrticillate branches, which are once or twice 

 subdivided,— and also lateral, on slender axillary branches 3 or 4 inches in length ; 

 bracts opposite, half an inch to near an inch lonf, and wider than long, broadly 

 ovate, often retuse, or emarginate, sessile, smooth ; petaloid segments of the invo- 

 lucre diluted, subreniform, purplish-brown within; ovary verrucose. Capsule 

 ra'.her small, slightly and rugosely verrucosa, often becoming nearly smooth. 



limb. Moist woodlands: not rery common. Fl. May— June. Fr. July— Aug. 



Obs. This plant has been found in several places in the Mica-slate range, in 

 retired shao'y vallies, — and also in Londongrove— in situations, and under cir- 

 cumstances, which seem to f.»rbid the idea of its having \ ecn introduced ;— as I 

 supposed might possibly be the case, when I published my Catalogue. Sec Florul. 

 Cestr. p. 103. I have never yet seen any specimen of it from abroad, nor have I 

 met with any Botanist who was acquainted with the plant. If Pursh ever saw it, 

 I incline to think he intended his E. pilosa for it ; but It does not well agree with 

 that species, as figured in Gmelin^s Flora Sibirira. Mr. Kuttall is decidedly of 

 opinion that it is a non-descript ; and as I am disused to concur with him, I submit 

 it, for the present, with the foregoing specific name. It is proper to add, however, 

 that Dr. Torrey has some doubts on this point; and remarks that it comes nearer 

 to E. amygdaloides, and E. hyberna, than to any other species in his collection, 

 Sixteen or eighteen additional species have been enumerated in the U. States ; — 

 of which the E. marginata, Pursh, (a handsome species, with ovate leaves, and 

 bracts variegated with while margins,) is becoming frequent in our gardens. 



415. CAULINIA. Willi. A'utt. Gen. 726. 

 [In honor of F. Cavolini ; a Neapolitan Botanist.] 



Stawixate Fl. Perianth 0. Anther sessile. Pistillate Fl. 

 Perianth 0. Ovary elliptic; style filiform; stigma bifid. Capsule 

 1 -seeded. 



Herbaceous, submerssd aquatics : leaves opposite, or verticillate, simple ; flow- 

 ers axillary. Sat. Ord. 238. Ltndl. Flvviales. 



