80 NORTH AMERICAN FLORA [Volume 34 



Baeria affinis A. Gray, Proc. Am. Acad. 1Q: 23. 1883. 



Baeria t'enella A. Gray, Proc. Am. Acad. 19: 23. 1883. 



Baeria coronaria A. Gray, Proc. Am. Acad. 19: 23. 1883. 



Baeria mutica A. Gray, Proc. Am. Acad. 19: 23. 1883. 



Baeria anthemoides A. Gray. Syn. Fl. N. Am. I 2 : 328. 1884. 



Baeria Parishii S. Wats. Proc. Am. Acad. 24: 83. 1889. 



Baeria aristata mutica H. M. Hall, Univ. Calif. Publ. Bot. 3: 173. 1907. 



Baeria aristata anthemoides H. M. Hall, Univ. Calif. Publ. Bot. 3: 174. 1907. 



Baeria aristata affinis H. M. Hall, Univ. Calif. Publ. Bot. 3: 174. 1907. 



Baeria aristata Parishii H. M. Hall, Univ. Calif. Publ. Bot. 3: 175. 1907. 



Annual, simple to diffusely much branched, erect, 0.5-3 dm. high, minutely glandular- 

 pubescent throughout and often also loosely villous especially towards the heads; leaves 

 mostly once or twice pinnately parted into linear-filiform divisions, rarely all entire on small 

 plants; peduncles 1-10 cm. long, exceeding the upper leaves; involucre hemispheric, 3-5 mm. 

 high; bracts 8-12, ovate, acute, with prominent midrib, at length deciduous with their achenes; 

 receptacle acutely conic, usually scrobiculate but varying to muriculate, either glabrous or 

 hirsute; ray-flowers 8-13, the oblong ligules 3-10 mm. long; disk-corollas about 2 mm. long, 

 the tube glandular; achenes about 2 mm. long, slightly compressed, each face with 1 or 2 nerves, 

 scabrous; squamellae 6-12, some or all of them tapering into awns, or all truncate and erose 

 and then either awned or awnless, or the pappus entirely wanting. 



Type locality : Near San Diego, California. 



Distribution: Southern California and Lower California; and (as a waif?) in Sacramento 

 County, California. 



Illustration: Bot. Mag. pi. 3828. 



50. LASTHENIA* Cass. Opusc. 3: 88. 1834. 



Rancagua Poepp. & Endl. Nov. Gen. & Sp. 1: 15. 1835. 

 Hologymne Bartl. Ind. Sem. Hort. Gott. 1837: 4. 1837. 

 Xantho Remy, Ann. Sci. Nat. III. 12: 191. 1849. 



Glabrous or slightly puberulent succulent annuals. Leaves opposite, sessile, entire or 

 merely dentate, narrow, often connate and sheathing at base. Heads on slender peduncles 

 terminating the branches or simple stems. Involucre of a single series of herbaceous bracts 

 connate into a 5-15-toothed or -lobed cup. Receptacle conic, muricate. Ray-flowers present, 

 the ligules yellow, very short in one species. Disk-corollas with slender glandular tube, dilated 

 throat, and 4-5-lobed limb, yellow. Achenes obtusely 2-4-angled, or somewhat compressed, 

 narrowly obovate to nearly linear but always narrowed at base. Pappus paleaceous or none. 



Type species, Lasthenia obtusifolia Cass. 



Heads apparently discoid, the ligules not exserted from the involucre; pappus 



conspicuous. 1. L. glaberrima. 



Heads radiate, the ligules conspicuous; pappus none. 2. L. glabrata. 



1. Lasthenia glaberrima DC. Prodr. 5: 664. 1836. 



L. minima Suksd. Allg. Bot. Zeits. 12: 7. 1906. 



Stems simple or with few branches, commonly rooting from the lower nodes, weak and 

 succulent, either erect or ascending from a decumbent base, 1-3 dm. high, glabrous throughouTT" 

 or loosely and sparsely puberulent near the heads; leaves linear, entire, obtuse, 4-8 cm. long 

 in average plants, some pairs connate and sheathing at base; peduncles sometimes all very 

 short, sometimes 15 cm. long, turbinate-thickened at summit; heads often nodding in fruit; 

 bracts of the involucre united nearly to the summit into a cup 5-7 mm. high, with acute ciliate 

 teeth; ray-flowers inconspicuous, their ligules not exserted from the involucre; disk-corollas 

 glandular, 1 mm. long, much shorter than the achenes, about equaling the pappus; achenes 

 compressed, nearly linear, appressed-pubescent with short ferruginous hairs; pappus of 5-10 

 rigid squamellae, some of them pointed or short-awned, the others erose or laciniate. (L. 

 minima is a dwarf form with puberulent peduncles.) 



Type locality: California. 



Distribution: Wet or muddy ground near the coast, from western Oregon to middle California. 



* By Harvey Monroe Hall. 



