STANDLEY TREES AND SHRUBS OF MEXICO 1559 



Shrub 6 meters high; leaf blades oval-ovate, 5 to 7 cm. long, 3 to 4 cm. wide, 

 grayish-tomentose beneath; heads subsessile, about 15-flowered, white, very 

 aromatic. (Description compiled.) 



2. Notoptera leptocephala Blake, Proc. Biol. Soc. Washington 34: 46. 1921. 

 Yucatdn; type from Xnocac. 



Shrub 3 meters high or less; leaf blades ovate or elliptic-ovate, 5.5 to 8.5 cm. 

 long, 2 to 3.5 cm. wide, denticulate, rough above, densely hispidulous-pilosulous 

 beneath; pedicels 1 to 4 mm. long; heads subcylindric when young. 



This species is said to be used medicinally. 



3. Notoptera scabridula Blake, Journ. Bot. Brit. & For. 53: 226. 1915. 

 Veracruz, Yucatdn, Campeche, and Oaxaca; type from Atoyac, Veracruz. 



Guatemala and Honduras. 



Scandent shrub 5 meters high, with widespreading branchlets; leaf blades 

 ovate or oblong-ovate, 5 to 12.5 cm. long, 2 to 6 cm. wide, rough above, rather 

 densely pilosulous beneath; corollas whitish. 



4. Notoptera brevipes (Robinson) Blake, Journ. Bot. Brit. & For. 53: 227. 



1915. 

 Otopappus brevipes Robinson, Proc. Amer. Acad. 44: 621. 1909. 

 Chiapas (type locality). Guatemala and Honduras. 



Scandent shrub; leaf blades ovate or oblong-ovate, 6.5 to 13.5 cm. long, 

 densely reticulate beneath; pedicels short and thick. 



5. Notoptera tequilana (A. Gray) Blake, Journ. Bot. Brit. & For. 53: 228. 1915. 

 Zexmenia tequilana A. Gray in S. Wats. Proc. Amer. Acad. 22: 425. 1887. 

 Otopappus tequilanas Robinson, Proc. Amer. Acad. 44: 622. 1909. 



Jalisco and Michoacan or Guerrero; type from Tequila, Jalisco. 



Shrub, sometimes scandent, about 2 meters high; stem tuberculate-strigillose; 

 'leaf blades ovate or lance-ovate, acuminate, harsh-pubescent on both sides; 

 heads yellow, about 1.5 cm. wide, in axillary and terminal cymose panicles. 

 5a. Notoptera tequilana acuminata (S. Wats.) Blake, Journ. Bot. Brit. & 

 For. 53: 228. 1915. 



Otopappus acuminatus S. Wats. Proc. Amer. Acad. 26: 140. 1891. 



Otopappus tequilanus acuminatus Robinson, Proc. Amer. Acad. 44: 622. 1909. 



Jalisco; type from Guadalajara. 



Stem strigose-pilose or hispid-pilose; leaves densely and rather softl}^ pubescent 

 beneath. 



6. Notoptera epaleacea (Hemsl.) Blake, Journ. Bot. Brit. & For. 53: 229. 



1915. 



Otopappus epaleaceus Hemsl. Biol. Centr. Amer. Bot. 2: 191. 1881. 



Morelos; type from Mexico, without definite locality. 



Shrubby; stem strigillose; leaf blades ovate, acuminate or acute, harshly 

 pubescent on both sides; heads about 2.5 cm. wide, solitary on axillary and 

 terminal peduncles 0.8 to 5 cm. long. 



68. ENCELIA Adans. (Fam. PI. 2: 128. 1763, hyponym); Lam. Encycl. 2: 

 356. 1786. 



Reference: Blake, A revision of Encelia and some related genera, Proc. 

 Amer. Acad. 49: 358-376. pi. 1. 1913. 



Herbs or shrubs with alternate leaves and solitary to panicled, radiate heads; 

 rays yellow; disk yellow or purple; involucre 2 or 3-scriate; rays neutral; achenes 

 strongly compressed, very fiat, oblong or obovate, narrowly white-margined, 

 villous-ciliate; pappus none or of 2 slender awns. 



