Part 1, 1907] GERANIACEAE 23 



6-7 mm. long, the bodies oblong or nearly so ; petals somewhat longer than the sepals ; 

 anther-bearing filaments toothless ; style-column 3-4 cm. long, minutely pubescent. 



Type locality : Europe. 



Distribution : Southern Canada, United States, Mexico, and Central America. Introduced 

 from Europe. 



Illustrations : Curt. Fl. Lond. 3 : pi. 23; Britt. & Brown, 111. Fl./. 2249 ; Parsons, Wild Fl. 

 Calif. 195. 



4. PELARGONIUM L/Her. ; Ait. Hort. Kew. 2 : 417. 1789. 



Annual or perennial herbs or partially woody often fragrant plants. Leaves opposite 

 or alternate ; blades entire, toothed, lobed or parted. Sepals 5, unequal, one of them pro- 

 duced into a spur which is adnate to the pedicel. Petals 5, or rarely fewer, unequal, the 

 two upper ones larger than the three lower ones. Stamens 10, oblique, 7 only bearing 

 anthers, or rarely only 2-6 with anthers. Style-column beaked, the styles pubescent within, 

 spirally coiled when freed from the central axis. Carpel-bodies rather narrow, acute at the 

 base. Seeds pitted or smooth. 



Type species, Pelargonium hirsutum (L.) Soland. 



Corolla about as long as the calyx or slightly longer. 



Calyx-spur gibbous at the tip ; leaf-blades decidedly 3-lobed. 1. P. aticeps. 



Calyx-spur not gibbous at the tip ; leaf -blades crenately several-lobed. 2. P. clandeslinum. 

 Corolla markedly longer than the calyx. 



Inflorescence umbel-like, the flowers conspicuously long-pedicelled ; 

 leaf-blades crenately lobed. 

 Leaf -blades with a dark -colored zone ; bracts, pedicels, and calyx 



glabrous or sparingly pubescent. 3. P. zonule. 



Leaf -blades without a zone ; bracts, pedicels, and calyx copiously 



hirsute. 4. P. inquinans. 



Inflorescence capitate, the flowers sessile or short-pedicelled ; leaf- 

 blades prominently lobed. 

 Leaf -lobes broad, toothed. 5. P. capitatum. 



Leaf -lobes narrow, pinnatifid. 6. P. terebinthinaceum. 



1. Pelargonium anceps L/Her.; Ait. Hort. Kew. 2 : 420. 1789. 

 Plants diffuse, the stems and branches rather slender, somewhat zigzag, minutely and 

 sparingly pubescent; leaf-blades mainly reniform or orbicular-reniform in outline, 2-5 cm. 

 wide, decidedly 3-lobed, the lobes unequally crenate, or those of the upper leaves somewhat 

 incised; calyx-spur mostly over one half as long as the pedicel, the tip gibbous; sepals 

 4-4.5 mm. long, acuminate, the outer ones ovate, eciliate, the inner ones lanceolate, copi- 

 ously ciliate ; petals mainly pink, 4-6 mm. long, the larger ones linear-pandurate ; style- 

 column 11-14 mm. long; carpel-bodies about 3 mm. long, acute at the apex. 



Type locality : Cape of Good Hope. 



Distribution : California. Naturalized from southern Africa. 



Illustration : Jacq. Coll. 4 : pi. 22, f. 3. 



2. Pelargonium clandestinum A. Cunn. Ann. Nat. Hist. 3 ; 317. 1839. 



? Pelargonium acugnaticum Thouars, Fl. Acugn. 44. 1811. 



Plants diffuse, the stems and branches relatively slender, finely and rather closely 



pubescent, slightly zigzag; leaf-blades ovate to ovate-reniform, 1.5-5 cm. wide, crenate- 



lobed and finely crenulate ; calyx-spur not gibbous at the tip; sepals 3.5-4 mm. long, acute, 



the outer ones ovate, ciliolate, the inner ones oblong, eciliate; petals mainly pink, 3-4 mm. 



long, the larger ones spatulate; style-column 7-9 mm. long; carpel-bodies about 3.5 mm. 



long, rounded at the apex. 



Type locality : New Zealand. 



Distribution : Southern California. Naturalized from New Zealand. 



3. Pelargonium zonale (L.) L/Her.; Ait. Hort. Kew. 2: 424. 1789. 



Geranium zonale L. Sp. PI. 678. 1753. 



Plants erect, more or less woody, usually finely pubescent ; leaf-blades suborbicular to 

 orbicular-reniform, crenate-lobed and crenate-toothed, with a zone of darker color between 

 the margin and the center, deeply cordate ; bracts, pedicels, and calyx glabrous or sparingly 



