4 GERANIACEAE 



or less retrorse-hirsute. Leaves 15-40 mm. broad, finely hirsute, 3-5-parted, the main divisions 

 cleft or incised into linear or lanceolate lobes ; pedicels retrorsely and usually appressed-pubes- 

 cent ; sepals awn-tipped, 5-6 mm. long, finely hirsute ; petals purple, 6-9 mm. long, deeply notched 

 at the apex; fruiting style-beak 9-11 mm. long, minutely pubescent; seeds minutely reticulate. 



Sparingly introduced from Australasia; San Francisco, Marin and Humboldt Counties, California. Type 

 locality: New Zealand. June-Sept. 



Geranium glabratum (Hook.) Small, N. Amer. Fl. 25: 10. 1907. Perennial with a taproot and a more or 

 less branched caudex, the stems spreading or decumbent, 1-7 dm. long, sparingly pubescent with retrorse hairs 

 or nearly glabrous. Leaves 2-4 cm. broad, sparingly pubescent, 3-S-parted, the main divisions cuneate, usually 

 with 3 broad teeth at the apex; pedicels retrorse-pubescent; sepals awn-tipped, about 5 mm. long, becoming 

 nearly glabrous, except on the nerves; petals purple, 5-6 mm. long, nearly rounded at the apex; fruiting style- 

 beak 11-12 mm. long, minutely pubescent; seeds reticulate. Native of Australasia, sparingly naturalized m 

 California. 



9. Geranium oreganum Howell. Oregon Geranium. Fig. 2971. 



Geranium incisum Nutt. ex Torr. & Gray, Fl. N. Amer. 1:206. 1838, as a synonym; Trelease, Mem. Bost. 



Soc. Nat. Hist. 4: 74. 1888. Not Andrews 1797. 

 Geranium albiflorum var. incisum Torr. & Gray, loc. cit. 

 Geranium, Hookerianum var. incisum Walp. Rep. 1: 450. 1842. 

 Geranium oreganum Howell, Fl. N. W. Amer. 106. 1897. 



Perennial, with simple caudex, the stout scape-like stems 3-7 dm. high, sparingly hirsute or 

 glabrate, not glandular. Leaves 6-15 cm. wide, strigose on both sides, somewhat 5-angled in 

 outline, 5-parted, the divisions cleft and coarsely toothed ; pedicels glandular-hirsute ; sepals awn- 

 tipped, 11-12 mm. long, short-hirsute; petals 15-23 mm. long, purple, glabrous except the ciliate 

 base; filaments ciliate at base; free style-tips 2 mm. long; fruiting style-beak 3-5 cm. long, 

 densely glandular-pubescent ; seeds 3-3 . 5 mm. long, closely reticulate. 



Edges of woods and open moist ground. Humid Transition Zone; southwestern Washington south through 

 Oregon on the west side of the Cascade Mountains to northwestern California. Type locality: Willamette 

 Valley, Oregon. May-Sept. 



10. Geranium viscosissimum Fisch. & Mey. Sticky or Viscid Geranium. 



Fig. 2972. 



Geranium viscosissitnum Fisch. & Mey. Ind. Sem. Hort. Petrop. 11: Suppl. 18. 1846. 

 Geranium canttm Rydh. N. Amer. Fl. 25: 14. 1907. 



Perennial with stout, usually simple caudex, the stems stout, scape-like, 3-8 dm. high, first 

 internode much elongated, densely villous with spreading or sometimes retrorse usually viscid 

 hairs, interspersed with more or less abundant short glandular hairs. Leaves 6-12 cm. wide, 

 densely hoary, suborbicular in outline, 3-5-parted, the divisions sharply incised ; pedicels densely 

 glandular-hirsute; sepals awn-tipped, 13-15 mm. long, glandular-pubescent; petals purple, 13-18 

 mm. long; free style-tips 4-5.5 mm. long; fruit glandular toward the apex; seeds closely re- 

 ticulate. 



Prairies and open woods. Arid Transition Zone; British Columbia and northeastern Washington to northern 

 California and northwestern Nevada, east to Saskatchewan and western South Dakota. Type locality: western 

 North AJnerica. May-Aug. 



11. Geranium nervosum Rydb. Teton Geranium. Fig. 2973. 



Geranium nervosum Rydb. Bull. Torrey Club 28: 34. 1901. 



Geranium strigosum Rydb. Bull. Torrey Club 29: 243. 1902. Not Burm. f. 1768. 



Geranium strigosius St. John, Fl. S. E. Wash. 243. 1937. 



Perennial, with usually simple caudex and scape-like stems, pubescent below with short re- 

 trorse nonglandular hairs. Leaves 5-10 cm. broad, 3-5-parted, the divisions incised ; petioles of 

 the basal leaves elongated, retrorsely pubescent; pedicels glandular-hirsute, the glands often 

 yellowish; sepals awn-tipped, 9-11 mm. long, minutely pubescent and ciliate; petals 15 mm. 

 long, pink with prominent darker veins ; fruiting stylar column 25-30 mm. long, glandular-hir- 

 sute; seeds reticulate. 



Woods and open meadows. Arid Transition and Canadian Zones; eastern Washington to northeastern Cali- 

 fornia and Nevada, Wyoming, and Colorado. Type locality : Fish Creek, Teton Forest Range, Wyoming. May- 

 Aug. 



12. Geranium Richardsonii Fisch. & Trautv. Richardson's Geranium. Fig. 2974. 



Geranium albiflorum Hook. Fl. Bor. Amer. 1: 116. 1831. Not Ledeb. 1831. 

 Geranium Richardsonii Fisch. & Trautv. Ind. Sem. Hort. Petrop. 4: 37. 1837. 

 Geranium Hookerianum Walp. Rep. 1: 450. 1842. 



Geranium pentagynum Engelm. in Wisliz. Mem. Tour North. Mexico 90. 1848. 

 Geranium loloense St. John, Fl. S. E. Wash. 242. 1937. 



Perennial, the stems erect or ascending, 2 . 5-7 dm. high, usually simple, glabrous or sparingly 

 glandular-pubescent. Leaves thin, 3-15 cm. broad, 3-7-parted, the main divisions incised, toothed 

 or lobed, sparsely strigose on the upper surface and on the veins beneath; pedicels slender, 1-2 

 cm. long, glandular-pubescent, the glands usually purple ; sepals awn-tipped, 8-12 mm. long, the 

 outer ones more or less glandular-pubescent at least below; petals white, with pink or purple 

 veins, rarely flushed with pink, 10-18 mm. long, pilose inside for about half their length; fila- 

 ments reddish purple, short-pilose about three-fourths their length; mature stylar column 2-2.5 

 cm. long, pubescent and with interspersed glandular-villous hairs; free style-branches yellow- 



