Part 1, 1907] GERANIACEAE 



Petals white. on r* if,/- 



Petals more than 1 cm. long. 20 - °' " > s!l ~~""- 



Petals purple, rose-purple or blue. 



Steru-leaves mainly with 3-lobed blades of a broadly 

 hastate type. 

 Outer sepals not glandular-pubescent; bodies of the 



inner sepals notched at the apex; leaf-blades thin. 24. G Hernandedi 

 Outer sepals glandular-pubescent ; bodies of the in- 

 ner sepals rounded at the apex; leaf-blades thick. 25. G. resimum 

 Stem-leaves mainly with 5-9-lobed blades, suborbicular 

 in outline. 

 Plants with simple rootstocks or caudices, the stem 

 erect and simple below. 

 Style-column mainly fine-pubescent, and some- 

 times with scattered longer gland-tipped 

 hairs; pedicels retrorsely pubescent with 

 glandular hairs. 

 Style-tip less than one half as long as the 



column ; calyx sparingly pubescent. 26:G. maculatum 



Style-tip over one half as long as the column ■ 

 calyx densely pubescent with long white 



c f ,.,„ hai , rs ' - , , . , 27. G. crianthum. 



StUe-eolumn denselv glandular-pubescent • pedi- 

 cels glandular-villous. 

 Introduced plant with finelv and sharply in- 

 cised leaf-lobes, the segments narrow. " 28 G tratense 

 Native plants with coarsely incised leaf-lobes 

 the segments broad. 

 Stem and petioles glandular-viscid ; petals 



stem'™ 1 ?' Ve t in , Cd - , ,. • *>■ G - vixosissimum. 



Mem and petioles retrorselv hairy. 



Petioles of the upper leaves minutely 



puberulent; petals strongly veined. 30. G.strigosum. 

 1 etioles of the upper leaves with long 

 hairs ; petals faintly veined. 

 Stem almost glabrous or sparingly hir- 

 sute ; leaf -blades short-strigose ; 

 inflorescence open. 31. Q incisum 



Stem and leaf -blades copiously pubes- 

 cent, densely hoary; inflores- 

 cence congested. 

 Outer sepals lanceolate, gradually 

 narrowed into the tip; stipules 

 of the basal leaves narrowly 

 lanceolate, acute or acuminate. 32. G. canum 

 Outer sepals elliptic, abruptly nar- 

 rowed into the tip ; stipules of 

 the basal leaves ovate or oblong, 



Plants with cespitos^branched caudices, the stems 33 ' °' " olli >- foU "'»- 

 usually diffusely branched. 

 Leaf-blades neither silky-canescent nor with nar- 

 rowly linear lobes. 

 Peduncles shorter than the leaves or sometimes 

 about twice as long ; primary divisions of 

 the leaf-blades merely cleft or toothed. 

 Petals obcordate to broadly obovate, light- 

 purple, sometimes quite pale and with 

 darker veins (except in G. Pringlei) 

 Stem glandular-villous with long spread- 

 ing hairs. 

 Main division of the leaf -blades much 

 longer than broad, with ovate to 

 lanceolate acute teeth. 34 G Parrvi 



Main division of the leaf:blades about 

 as broad as long, with broadly ovate 

 abruptly short-acuminate teeth. 35. G. Patlersonii 



btem with gray glandular spreading or 

 reflexed hairs on the lower portion. 

 Stem, petioles and calyx long-hirsute. 

 Leaf-blades angular in outline, 

 the ultimate segments lanceo- 

 late or ovate-lanceolate ; sepal- 

 tips stout, 1-1.5 mm. long; 

 style-column stout-beaked. 36. G Pringlei 



Leaf-blades rounded in outline, 

 the ultimate segments reni- 

 form or broadly ovate ; sepal- 

 tips slender, 2-2.5 mm. long; 

 style-column slender-beaked. 37. G. crenatum. 



