STANDLEY TREES AND SHRUBS OF MEXICO 1577 



6. Verbesina dissita A. Gray, Proc. Amer. Acad. 20: 299. 1885. 

 Northern Baja California; type from Todos Santos Bay. 



Suffruteseent; stem sparsely strigillose or hispidulous, rather remotely leafy; 

 leaves opposite below, alternate above, ovate, 4 to 5 cm. long, acute, at least 

 tfie upper sessile and auriculate-clasping at base, entire or remotely denticulate; 

 heads several, large, the disk about 2 cm. wide, the pedicels 2 to 12.5 cm. long- 

 involucre about 1 cm. high, graduate, the phyllaries oblong or obovate, obtuse 

 or rounded, appressed; rays 1.2 to 2 cm. long. 



7. Verbesina palmeri S. Wats. Proc. Amer. Acad. 24: 56. 1889. 

 Known only from the type locality, Los Angeles Bay, Baja California. 

 Suffruticose, about 1.-3 meters high, forming large clumps, hispid-scabrous 



throughout with mostly deciduous spreading hairs with persistent tuberculate 

 bases; leaves opposite; petioles 0.5 to 1.5 cm. long, very broadly winged, auricu- 

 late-clasping; blades deltoid-ovate, 3 to 7 cm. long, 2.5 to 4.8 wide, coarsely 

 dentate; heads rather numerous, cymose-panieled, the pedicels 1.5 to 5.5 cm. 

 long; involucre 5 to 6 mm. high, 2-seriate, the phyllaries oblong, obtuse or 

 rounded, with somewhat squarrose herbaceous tips; rays 6 to 10 mm. long. 



8. Verbesina oligocephala I. M. Johnston, Proc. Calif. Acad. IV. 12: 1200. 



1924. 



Known only from the type locality, Agua Verde Bay, Baja California. 



Shrub about 1 meter high; branchlets white-tomentose; leaves opposite; 

 petioles winged, 5 to 8 mm. long; blades ovate or lance-ovate, 4 to 7 cm. long, 

 acute, cuneate or rounded at base, light green, tuberculate-scabrous; heads 2 to 

 4 in a terminal cyme hidden by the leaves, the pedicels 4 to 11 mm. long; involucre 

 3 to 4 mm. high, the phyllaries 2-seriate, ovate-oblong, obtuse, with spreading 

 herbaceous tips; rays orange-yellow, about 6 mm. long. (Description compiled.) 



9. Verbesina leptochaeta A. Gray, Proc. Amer. Acad. 21: 389. 1886. 

 Known only from the type locality, near Batopilas, Chihuahua. 



Shrubby, 1.5 to 2.5 meters high; leaves opposite, those of the stem deltoid, 

 10 to 12.5 cm. long, serrate, hispidulous-scabrous, abruptly narrowed into a long 

 narrowly winged petiole; heads subsolitary, rather large; outer phyllaries nar- 

 rowly oblong, spreading, herbaceous; rays small. (Description compiled.) 



10. Verbesina peninsularis Blake, Proc. Biol. Soc. Washington 37: 58. 1924. 

 Known only from the type locality, 20 miles east of San Ignacio, Baja Cali- 

 fornia. 



Suffruteseent or fruticose; stem finely hispidulous-pilosulous; leaves opposite 

 below, alternate above; bla.des triangular-ovate, 9 to 11 cm. long, 4.5 to 5.5 cm. 

 wide, acuminate, cuneately decurrent to the base of the short petiole, coarsely 

 toothed, somewhat hastate-lobed at base, green and hispidulous on both sides, 

 the hairs especially of the upper surface tuberculate-based; heads about 10, the 

 pedicels 1 to 8 cm. long; involucre 7 to 8 mm. high, the phyllaries herbaceous, 

 oblong-ovate, acutish to obtuse, erect; rays about 1 cm. long. 



11. Verbesina erosa T. S. Brandeg. Proc. Calif. Acad. II. 3: 146. 1891. 

 Baja California; type from Sierra de San Francisquito. 



Suffruteseent; stem spreading-hirsute or hirsutulous; leaves opposite below, 

 alternate above, ovate or lance-ovate, the larger 8 to 11 cm. long, 3 to 7 cm. 

 wide, acuminate, subsessile or on winged petioles 1.8 cm. long or less, sharply ser- 

 rate or the upper subentire, rough above, hirsute or hirsute-pilose with antrorse 

 hairs beneath; heads few, the pedicels 1 to 8 cm. long; involucre 6 to 8 mm. 

 high, the phyllaries chiefly lanceolate or linear, acute or acuminate. 



12. Verbesina chihuahuensis A. Gray, Proc. Amer. Acad. 21: 389. 1886. 



Verbesina parrasana T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 191. 1911. 



Sonora, Chihuahua, Coahuila, and Durango; type from Santa EulaUa Moun- 

 tains, near Chihuahua. 



