18 PLANTEH FENDLERIANA. 
ET ee INVOLUCRATA, var.; With the leaves less dissected. Low and moist’ places, 
Rabbit’s Ear and McNees Creeks. 
a forms a thickened perennial root, The corolla is cherry-red (turning purplish in drying), handsome, 1} to 2 
mches in diameter. Petioles often hirsute. Head of fruit smaller than in the last. — Well characterized by 
the smooth carpels, with a very large and thick beak. 
6. C. MAcrorHIza: caulibus strigulosis humilibus e radice napiformi ; foliis radicalibus oblongo-cordatis, 
primariis crenatis integris, sequentibus hastato-lobatis varie incisis, caulinis pedato-3 —5-partitis segmento in- 
termedio majore 3-—7-fido vel laciniato; pedunculis corymbosis foliis seepe brevioribus; floribus parvulis 
albidis ; calycis strigosi laciniis ovato-lanceolatis ; carpellis rugosissimis. — Sida macrorhiza, James! Mss. in 
Herb. Torr. Malva pedata 8? umbellata, Torr. § Gray! Fl. 1. p. 227; Hook.! Lond. Jour. Bot. 6. p. 
76.— Plains of the Platte, Dr. James, Fremont, Geyer. — An entirely distinct species. ‘The numerous 
stems, about a foot long, spring from a large edible root, which attains the diameter of from three to five 
inches. The peduncles are seldom two inches in length. ‘The petals are white or nearly so, only half an 
inch long. 
7. C. aucmorbdEs: strigosa; caulibus erectis gracilibus; foliis “inferioribus triangulato-cordatis incisis ” 
(Michx.), mediis hastato-5 — 7-partitis laciniatis, summis 3 - 5-sectis, segmentis linearibus ; pedunculis corym- 
bosis folia superantibus; floribus majusculis roseis vel albis; calycis hispidi laciniis triangulatis acutis; car- 
pellis 10 hirsutulis dorso rugosissimis inferne dehiscentibus. — Sida aleweoides, Miche. ! Fl. 2. p. 44; Torr. 
§& Gray! Fl. 1. p. 234, §- Suppl. p. 681.— Gravelly soil, Kentucky and Tennessee, Michaux, Dr. Currey 
(v. sp. in herb. Torr.), A foot high. Petals narrowly cuneiform, nearly an inch long. — Dr. Torrey (1. c.) 
noticed the conspicuous transverse dorsal process in the upper part of the cell of the carpel. Tt is, however, 
equally striking in the two preceding species, with which this is entirely congeneric. In these, also, the seed 
does not entirely fill the cell (below the process), and falling back somewhat the umbilical sinus is at length 
often directed obliquely upward more or less ; but the structure and insertion are not as in Sida. 
2. SIDALCEA, Nov. Gen. 
Calyx inyolucello nullo nudus. Petala integra vel obcordata. Tubus stamineus apice duplex, nempe in 
phalanges 5 exteriores pluriantheriferas petalis oppositas, atque circiter 10 interiores vel filamenta subindefinita 
per paria coalita, solutus! Styli 5-9, introrsum stigmatosi. Ovulum in loculis solitarium, peritropo-adscen- 
dens. Capsula 5-9-cocca; carpellis membranaceis, reniformibus, muticis vel apiculatis, solubilibus, intus 
laceratione apertis. Semen adscendens, embryo arcuatus, et radicula infera ut in Malva. — Herbs Am.-Bor. 
Oceidentales; foliis rotundatis plerisque palmatifidis, radicalibus integriusculis; caule virgato ; floribus roseo- 
purpureis albisve, racemosis. __ 
Side sp., Lindl., Nutt., Torr. §& Gray, Fl. 1. c. no. 14-17. 
A genus well marked in habit and character ; distinguished from Sida (to which the species have been 
referred on account of the naked calyx) by the ascending ovule and descending radicle as well as the uni- 
lateral stigmas, which occupy the whole inner face of the styles, as in Malva, &c.; from Malvastrum by the 
stigmas and the whole habit; from Callirrhoé by the beakless carpels ; from Malva by the want of an invo- 
lucre and the fewer carpels; and from all by the elimination of the stamens from the tube in the form of an 
outer and an inner series, and the combination of the filaments, at least of the outer series, into distinct and 
definite phalanges. This peculiarity is evident in all the species upon inspection, but is carried to the maxi- 
