CL. XVI.] 23. GERANIUM ROTUND! FOtlUM. 409 



cuius having a smooth beak. Geranium pus'dlum has cmar«;i, 

 nated petals, only five antherae, and its flowers are much 

 smaller, although also ])ale-red. The beak of the vtrkulus 

 is not furnished with distant, but with thick crowded hairs. 

 G. pyrenaicimi^ which is most nearly related to G. molk^ has 

 a perennial root, is much larger in all its parts, has also large 

 flowers, the petals of which are deeply cleft, and it has not a 

 bunchy utriculus. G. dissectum is distinguished by its pal- 

 mate, cleft leaves, the lobes of which are linear, and stand at 

 regular distances from each other ; the emarginated petals 

 are as long as the awned calyx: the beak of the utriculus is 

 furnished with shaggy hairs: the flower-stalks are shorter 

 than the stem-leaves. G. columbinum, on the other hand, 

 which is very like G. dissectum, has very long, wavering, 

 flower-stalks, stem-leaves of the same kind, large flowers, anct 

 a smooth beak of the utriculus. 



The genus Geranium cannot be distinguished at first sight 

 from Erodium Ait. But the latter has among its ten fila- 

 ments, five that are unfruitful and abortive : the beak of the 

 utriculus is turned into a spiral shape, and is intcrn:illy fur- 

 nished with hairs, which may be most easily seen in E. cicu- 

 tariuniy the most common species. Pelargonium Ait. has a 

 similar beak of the utriculus, but the corolla is irregular and 

 two-lipped : the nectary is in the bottom of the tubular calyx. 

 The diagnostic character of Geranium, therefore, is as fol- 

 lows : the corolla regular, ten fertile filaments, five nectarie<> 

 at the base of the filaments, and a straight beak of the utri- 

 culus, internally without hairs. The Geranijc constitute a 

 natural family, which stands between the Agrunia- and Mul- 

 yacese, (Anlejt. ii> vid. 793.) 



Sijnonijme^ mul Figures. 



Geranium alterum, Fuclis. 205. Maitli. ()21. 

 Pes columbinus, Dodon. 61. Lubcl Hist 37C. Ic. Go8 

 Ger. ahud fecundum, Dalech. 1277. Tabcrn. 12J3. 

 Ger. columbinum, Ger. cm. 938. Pari'. 70(). 

 Ger. folio rotundo, J. Bnuh. 3. 173., is intencK^l for it, ))UL 

 the figure is quite a failure. 



