104 NORTH AMERICAN FLORA [Volume 25 



1. FAGONIA L. Sp. PI. 386. 1753. 



Branching, diffuse, spreading, or prostrate underslirubs with a ligneous perennial base. 

 Stems angled and channeled, spinulose on the upper angles, glutinose or glabrous. 

 Leaves opposite, digitately 1-7-foliolate; leaflets entire, callous-mucronateorspinulose-tipped; 

 stipules often spinescent. Flowers solitary, pedunculate, rose-colored or purplish, rarely 

 yellowish. Sepals 5, imbricate, caducous. Petals 5, imbricate, unguiculate, caducous. 

 Stamens 10, inserted on an obscure disc. Filaments filiform, naked. Anthers oblong. 

 Style subulate, acute. Stigma simple. Ovary 5-celled ; cells 2-ovuled near the base. 

 Fruit pyramidate-ovoid, deeply 5-angled, the 5 one-seeded carpels at length separating from 

 the axis and dehiscing on the inner edge. Seeds erect, compressed, broadly oblong, with 

 a bony endosperm. Cotyledons broad, flat, ovate. 



Type species, Fagonia cretica L. 



Leaves 3-foliolate. 



Plant not glandular ; beak of the fruit about 1 mm. long. 



Stem and leaves glabrous, the former merely spinulose-scabrous on the 



angles ; leaflets 3-10 mm. long ; sepals lanceolate or oblong-lanceolate. 1. F. califomica. 

 Stem and leaves pubescent; leaflets 8-20 mm. long; sepals narrowly 

 lanceolate. 2. F. Barclay ana. 



Plant more or less glandular ; beak of the fruit 1.5-2.5 mm. long. 



Leaflets lance-ovate to rhombic-obovate ; spines slender. 3. F. viscosa. 



Leaflets narrowly linear ; spines stout. 4. F. pachyacantha. 



Leaves 5-7-foliolate ; leaflets narrowly linear. 5. F. Palmeri. 



1. Fagonia calif ornica Benth. Bot. Voy. Sulph. 10. 1844. 

 A low dichotomously branching undershrub ; stems 2-5 dm. long, diffuse, much 

 branched, terete or obscurely angled below, angled and channeled above, glabrous, minutely 

 spinulose on the angles; stipules subulate, spinescent, 2-5 mm. long, arcuate-spreading; 

 petioles 3-10 mm. long ; leaflets 3, lanceolate or ovate-lanceolate, glabrous or nearly so, 

 acute at each end, 3-10 mm. long, 1-3 mm. wide, the lateral ones oblique, often caducous ; 

 peduncles nearly equaling the leaves ; sepals lanceolate or oblong-lanceolate, spinulose- 

 tipped ; petals spatulate, unguiculate, 5-8 mm. long, twice as long as the sepals ; fruit 

 ovate or spindle-shaped in outline, tapering above to the slender style, 4-5 mm. long, 7-8 

 mm. broad, finely pubescent, in age glabrate, slightly reticulate ; beak about 1 mm. long. 



Type locality : Bay of Magdalena, Lower California. 



Distribution : California to southern Utah, Sonora, and Lower California. 



Illustration : Pacif. R. R. Rep. 5 : pi. 1. 



2. Fagonia Barclayana (Benth.) Rydberg, sp. now 



Fagonia califomica Barclayana Benth. Bot. Voy. Sulph. 10. 1844. 



A dichotomously branched undershrub ; stem with rather slender greenish branches, 3-7 

 dm. long, finely villous-puberulent ; stipules subulate, about 5 mm. long, spinulose, reflexed- 

 spreading; petioles 3-5 mm. long; leaflets 3, lanceolate, 8-20 mm. long, 2-5 mm. broad, 

 finely pubescent, spinulose-tipped ; peduncles 2-5 mm. long ; sepals narrowly lanceolate, 

 3 mm. long, spinulose-tipped ; petals rose-purple, about 5 mm. long ; blades ovate-spatulate, 

 acutish ; fruit 4-5 mm. long, finely pubescent, slightly reticulate ; beak about 1 mm. long. 



Type locality : Bay of Magdalena. 

 Distribution : Lower California. 



3. Fagonia viscosa Rydberg, sp. nov. 



Fagonia califomica glulinosa Vail, Bull. Torrey Club 22 : 229. 1895. Not F.glntinosa Delile, 1813. 

 A divaricately branched undershrub, 3-6 dm. high ; stems with grayish bark ; branches 

 yellowish-green, strongly angled, viscid, with golden-yellow glandular hairs ; stipules sub- 

 ulate, spinescent, divaricate-spreading, 5-7 mm. long ; petioles 5-10 mm. long, spreading, 

 glandular ; leaflets 3, glabrous, 8-15 mm. long, 3-8 mm. wide, the terminal rhombic- 

 obovate or rhombic-oblanceolate, the lateral ones obliquely ovate or broadly lanceolate ; 

 peduncles 3-5 mm. long ; sepals ovate-lanceolate, spinulose-tipped ; petals rose-purple, 

 6-8 mm. long; blades obovate-spatulate ; fruit about 5 mm. long, finely pubescent, rather 

 strongly reticulate ; beak 1.5-2 mm. long. 



Type locality : Sonora. 



Distribution : Sonora, Lower California, and San Diego County, California. 



