FABACEAE. 193 



3. M. apiculata Willd. Stems branched from the base, spreading, 

 3-6 dm. long; leaflets deltoid, 10-12 mm. long, denticulate except 

 near the base; pod spirally coiled; 3-5 mm. broad, unarmed, strongly 

 reticulated, the reticulations extending to the edge and appearing 

 as a row of tubercles on either side of the margin. 



Occasional in lawns, Los Angeles; Pasadena. Native of Europe. 



4. M. orbicularis All. Much branched and spreading; leaves 

 obcordate, denticulate above; stipules laciniate; peduncles 1-2- 

 flowered; pods coiled, unarmed, veiny, about 1 cm. broad. 



This species, a native of southern Europe, was collected in a 

 field near Santa Ana by Helen D. Geis in 1902. We are not aware 

 that it has been reported from any other locality in North America. 



5. M. lupulina L. More or less pilose-pubescent; stems pro- 

 cumbent or ascending, 2-4 dm. long, from a perennial taproot; 

 leaflets broadly obovate, denticulate above; flowers in short spikes 

 on slender peduncles, yellow, scarcely 2 mm. long; legume 1-seeded, 

 smooth, reniform, the acuminate tip coiled. 



Glenn Ranch, Lytle Creek. Native of Europe. 



5. MELILOTUS L. Sweet Clover. 



Erect annual or biennial herbs with pinnately 3-foliate 

 leaves, the leaflets serrulate. Stipules adnate. Flowers 

 small in slender pedunculate racemes. Petals free from 

 the diadelphous stamens, deciduous. Pod ovoid, small, 

 scarcely dehiscent, 1-2-seeded. 



1. M. indica (L.) All. Annual; glabrous, erect, 3-20 dm. high, 

 branching; leaflets mostly cuneate-oblong, obtuse, denticulate, 

 2.5 cm. long or less; racemes many, bearing small, nearly sessile, 

 yellow flowers. 



Common in damp ground. Native of Europe. 



2. M. alba Lam. Annual; glabrous, erect, 6-20 dm. high, 

 branching; leaflets truncate; racemes many, elongated; flowers 

 white, the standard exceeding the other petals. 



Habitat of the last and as generally distributed but much less 

 common. Native of Europe. 



6. TRIFOLIUM L. Clover. 



Annual or perennial herbs with palmately 3-foliate 

 leaves. Leaflets usually denticulate. Stipules adnate. 

 Flowers in capitate racemes, spikes or umbels, rarely 

 few or solitary, on more or less elongated axillary or 

 terminal peduncles. Calyx 5-cleft with nearly equal 

 teeth, persistent. Petals persistent, all more or less 

 adnate to the staminal tube by their claws, or the stand- 

 ard sometimes free: w^ngs narrow; keel mostly obtuse. 

 Stamens diadelphous. Pods membranous, shorter or 



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