MALVACEAE. 51 



Plate 117, 118. 



CALLIRRHOE, Nutt, 



Involucellum nullum vel 1-3-phyllum. Petala cuneifor- 

 mia, tmncata, apice saspius fimbriato-erosa. Carpella rectius- 

 cula, rostro brevi crasso demum cavo intus processu dorsali 

 ligulaBformi aucta. Embryo arcuatus. Csetera fere Malvse. 

 — Radix ssepissime napiformis vel tuberosa. 



Callirrhoe, Nutt. in Jour. Acad. Pliilad. 2. p. 181. Gray, PI. Fendl. 



in Mem. Amer. Acad. (n. ser.) 4. p. 16. 

 NuTTALLiA, Bart. Fl. N. Amer. 2. t. 62. Hook. Exot. Fl. t. 171, 172, & 



Jour. Bot. 1. p. 196 (non Terr. & Gr.). 

 Malv^ Sp., Torr. & Gray, Fl. N. Am. 1, p. 225. 



Calyx naked, or involucellate with from one to three her- 

 baceous bracts, five-cleft, persistent ; the segments triangular 

 or lanceolate, acuminate, three-nerved, valvate in aestivation. 

 Petals 5, hypogynous, convolute in aestivation, broadly 

 cuneiform, truncate, the dilated extremity commonly erose- 

 denticulate or fimbriate, their claws adnate to the base of 

 the stamineal column. Stamens indefinite, monadelphous 

 in a simple short column, the dilated base of which is adnate 

 to the claws of the petals, hypogynous; filaments separate- 

 ly becoming free in several series from the summit of the 

 column : anthers reniform or oblong, one-celled, opening 

 by a longitudinal line along the convex side. Pollen glo- 

 bose, hispid. Ovaries 10-20, united in a circle around a 

 central receptacle : styles as many as the ovaries, filiform, 

 united below, their distinct portion stigmatose (minutely 

 hispid) for the whole length on the inner face. Ovule soli- 

 tary in each carpel, amphitropous, peritropous-ascending, the 

 micropyle pointing to the base of the cell. 



Fruit formed of a depressed ring of more or less beaked 

 crustaceous and indehiscent or somewhat two-valved carpels, 



