STANDLEY TEEES AND SHRUBS OF MEXICO. 1311 



6. BERENDTIA A. Gray, Proc. Amer. Acad. 7: 379. 1868. 



Shrubs ; leaves opposite, entire or toothed ; peduncles axillary, 1 to 5-flow- 

 ered ; calyx tubular-campanulate, 5-dentate, 5-costate ; corolla tube ampliate 

 above, the limb bilabiate, the lobes spreading ; stamens 4. 



The species listed are the only ones known. 



Plants glabrous 1. B. levigata. 



Plants copiously pubescent. 



Peduncles mostly 3 to 5-flowered 2. B. coulteri. 



Peduncles 1-flowered. 



Flowers 3.5 to 5 cm. long 3. B. rugosa. 



Flowers about 1.5 cm. long 4. B. spinulosa. 



1. Berendtia levigata Robins. & Greenm. Proc. Amer. Acad. 32: 39. 1896. 

 Puebla ; type from Tehuacan. 



Shrub, 1 meter high or less ; leaves ovate-elliptic to lance-oblong, 4.5 cm. 

 long or less, short-petiolate, acute, dentate above the middle ; peduncles 1- 

 flowered ; corolla about 4 cm. long, orange with crimson spots. 



2. Berendtia coulteri A. Gray, Proc. Amer. Acad. 7: 380. 186S. 



The type locality is not stated by Gray ; Hemsley gives it as " Zimapan and 

 San Bias to Guadalajara." 



Leaves oblong or obovate. nearly entire ; corolla tube scarcely exserted from 

 the calyx, the limb about 12 mm. broad. 



3. Berendtia rugosa (Benth.) A. Gray, Proc. Amer. Acad. 7: 380. 1868. 

 Diplacus rngosus Benth. in DC. Prodr. 10: 368. 1846. 



Berendtia gliieshreehtii A. Gray, Proc. Amer. Acad. 7: 380. 1868. 

 Chiapas. 



Plants villous ; leaves ovate or obovate-oblong, 3.5 cm. long, crenate-dentate 

 above the middle ; corolla tube 3 times as long as the calyx ; corolla " scarlet." 



4. Berendtia spinulosa S. Wats. Proc. Amer. Acad. 25: 159. 1890. 



Known only from the Sierra Madre near Monterrey, Nuevo Leon, on lime- 

 stone ledges. 



Much-branched shrub, glandular-hispidulous throughout ; leaves linear- 

 oblanceolate to elliptic-oblong, acute or obtuse, sessile or short-petiolate, en- 

 tire or with a few obscure teeth, the margins revolute; corolla yellow. 



7. HEMICHAENA Benth. PI. Hartw. 78. 1841. 

 A single species is known. 



1. Hemichaena fruticosa Benth. PI. Hartw. 78. 1841. 



Leucocarpus fruticosus Benth. in DC. Prodr. 10: 336. 1846. 



Oaxaca and Chiapas. Central America ; type from Quezaltenango, Guate- 

 mala. 



Plants herbaceous or suffrutescent, about 1 meter high, viscid-villous, the 

 branches terete; leaves opposite, ovate-oblong or oblong-lanceolate, 12 cm. 

 long or less, acute or acuminate, sessile and clasping, dentate ; flowers in 

 few-flowered pedunculate axillary cymes; calyx campanulate, 5-lobate, scarcely 

 angulate; corolla about 4 cm. long, the tube broad, the limb 5-lobate, bilabiate; 

 stamens 4. 



