nOSACEJE. 



367 



three. From Grinn, however, we cannot separate Coluria, because 

 of its articulated style, nor Walddeinia on account of the reduced 

 number of its carpels, since we do not distinguish Ilorkelia or SiMaldia 

 and luesia respectively, presenting as they do these characters, from 



Oeum Waldsteinia. 



^^ 



Fig. 434. 

 Longitudinal section of flower. 



Potentilla. In this genus Geniii we must also retain Sfylipus venius,^ 

 a small-flowered North American plant, in which the calycle dis- 

 appears entirely, or is only represented by five very minute glands 

 alternating with the sepals. The same thing occurs in some of the 

 known species" of the section Waldsteinia. Thus marked out, the 

 genus Geum includes about thirty-five species,' from the cold and 

 temperate regions of all parts of the world, but more abundant in 

 the northern hemisphere. 



The genus Dry as'' (fig. 435), which has often given the group now 

 under consideration the tribal name oiBryadece,^ has altogether the 

 sexual organs" and fruit of the section Sicversia of Gct/m ; but the 



or three branches, as many as there are carpels. 

 Each ovary is articulated with the top of this 

 branch and the style itself is articulated at its 

 base, as in Coluria. The ovule is that of Geum 

 proper. 



1 Rafin., Neogen. (1825), 3, ex Tobe. & Gk., 

 Fl. N. Amer., i. 422. — Qeiim vernum Tore. & 

 Ge., loc. cit. 



2 DC, loc. cj7.— ToEE. & Ge., Fl. N. Amer., 

 i. 426.— A. Geat, Man. of Bot., ed. v. 153.— 

 Chapm., Fl. S. Unit.-Slates, 123. — Walp., 

 Sep., ii. 46. — Roox., Icon., t. 76; Bot. Mag., 

 t. 1567, 2595. 



3 DC, Prodr., ii. 550, 555.— Geen. & Godk., 

 JF7.rfei^;-.,i.519.— Doiss., Vog. JE:5/?.,t.58.— Tokk. 

 & Ge., Fl. N. Amer., i. 420. — A. Gray, Man. of 

 Bot., ed. V. 151 ; PI. Fendler., 40.— Chapm., 

 Fl. 8. Unit.-Slales, 123.— C Gay, Fl. Chil., ii. 

 276.— Wedd., Chlor. And., ii. 235.— Hook. F., 

 Fl. Antaref., ii. 262; Handh. of N.-Zeal. FL, 



55.— Benth., Fl. Austral., ii. 427.— Haet., 

 Thes. Cap., t. 18. — Haet. & Sond., J'Z. Cap., 

 ii. 289.— Walp., Eep., ii. 46; v. 656; Ann., i. 

 ^T2.—Bot. Reg., t. 1088, 1348. 



^ L., Gen., n. 637.— J., Gen., 338.— G^etn., 

 Fruct., i. 352, t. 74. — Lamk., Diet., ii. 329; 

 Suppl., li. 525 ; III., t. 443. — Nestl., Pot., 

 16.— DC, Prodr., ii. 549. — Spach, Suit, a 

 Buffon, i. 477.— Endl., Gen., n. 6389.— B. H., 

 Gen., 618, n. 42. — Chamadrgs Clxts., Hist., 

 ii. 351, ex Adans., Fam. des PL, ii. 295. 



* Ventl., Tabl., iii. 349. — Endl., op. cit., 

 12il. —FudrgadecB ToBE. &Gn.,FL N. Amer., 

 i. 426. 



^ B. oclopefala L. (Spec, 717) has very 

 numerous stamens, as in most species of Geum. 

 The filaments, intlexed in the bud, are inserted 

 on the margin of the glandular coloured disk 

 lining the receptacle. The carpels arc very nume- 

 rous, and like those of Sieversia (tig. 435). The 



