210 Planta Lindheimeriane. 
(615.) CrcuTa MacuLATA, Linn. Banks of Comale Creek. 
July. Plant 4 to 7 feet high. 
404. DAUCOSMA, Engelm. & Gray. 
Calycis dentes 5 subulati, persistentes. Petala obovata, 
emarginata, cum lacinula apice emarginato-biloba inflexa. Sty- 
lopodium conicum, persistens ; stylis elongatisreflexis. Fruc- 
tus ovoideus, ala angustissima crassa cinctus : mericarpia jugis 
5 crassis obtusis (in fruct. juniore subduplicibus aut dorso 
exaratis). Valleculz univittate: commissura plana bivittata ; 
vittis latis rectis. Semen semiteres. Carpophorum biparti- 
tum.—Herba annua, glabra, odore forte Dauci (unde 
nomen); caulibus 2—3-pedalibus ramosis striatis farctis ; 
foliis ternati—quinatisectis, segmentis tripartitis, lobis lacini- 
atis venosis lanceolatis, seu fol. supremorum lineari-setaceis ; 
involucri et involucelli phyllis plurimis 3—5-partitis setaceis 
3 or 4 lines wide at the base, thence tapering gradually to the apex. Ravenel de- 
scribes them from the living plant as “terete, solid, but soft and spongy, with a 
deep groove in the upper surface, and a few obsolete spinulose serratures.” He 
remarks, that “the tube of the calyx is not entirely clothed with lanceolate vesi- 
cles,” as in E. Virginianum, etc.; but I find that this character is not uniform. 
The palee of the receptacle are larger; their three spiny cusps stronger and of 
equal length, and the calyx-lobes much less pointed than in E. Virginianum, but 
more so than in E.. aquaticum. 
2. E. Vireinranum (Lam. Dict 4. p. 759): caule simplice vel apice cymoso; 
foliis lineari-lanceolatis planis, inferioribus venulosis subspinuloso-serratis dentibus 
uncinatis, radicalibusve fere integerrimis, superioribus §pinulosis seu laciniatis, 
involucralibus trifidis vel 3-5-cuspidatis capitulo fructifero subequalibus; paleis 
receptaculi trinervatis, tricuspidatis, cuspide medio longiore lobos calycis fructiferi 
acuminato-aristatos subeequantibus. — E. lacustre Virginianum, &c., Pluk. Alm. t. 
396, f. 3. E.aquaticum g. Linn. E. Plukenetii, Ell. Sk. 1. p. 582. Wet places, 
margin of ponds and streams, New Jersey to Florida and Texas. Flowers in 
August and September in the Northern States; in July and June farther south. 
Plant one or two feet high. . 
3. E. prmaLtum: caule 4-6-pedali superne ramoso; foliis lanceolatis planis 
venosis serratis utrinque attenuatis, radicalibus magnis longe petiolatis costa valida, 
summis linearibus spinuloso-dentatis incisisve, involucralibus capitulo 2-3-plo lon- 
gioribus ; paleis receptaculi trinervatis breviter tricuspidatis lobos calycis fructiferi 
subulato-acuminatos vix equantibus. — E. aquaticum, Michz. Fl. 1. p. 163, non 
Linn. E. Virginianum, Ell. Sk. 1. p. 343, non Lam. — In tide swamps, 8. Carolina + 
and Georgia; August. Michaux states he found it especially on Goose Creek, a 
tributary of Cooper River, in the tide swamps of which it was gathered by Mr. 
Ravenel. The lowest leaves are from one to two feet in length, and from 25-3 
inches in breadth, not unlike those of a Rumex in appearance, on petioles a foot 
or 18 inches in length. The palez are nearly as in E. Virginianum. 
