OF ARTS AND SCIENCES. 57 



Laphamia (?), sp. Foliage only of a shrubby composite, 2 feet 

 high, much resembling L. insulans, but the pubescence ditlcreut. 

 Common over the summit of San Pedro Martin Island. (40G.) 



Pekityle Califoknica, Benth. Abundant about Los Anwles 

 Bay and around the old French fort at Guaymas. (5G2.) 



Perityle deltoidea. Annual, low and slender, minutely pubes- 

 cent : leaves ovate-deltoid, coarsely and somewhat irregularly toothed, 

 an inch long or less, exceeding the petioles : peduncles an inch long or 

 less ; heads 2 or 3 lines high, the bracts linear, acuminate : flowers 

 yellow ; ligule linear-oblong. 2 lines long : style-appendages linear, 

 flattened, obtuse, not hispiduious: achenes a line long, shortly ciliate, 

 the crown of very short bristles ; awn solitary, as long as the disk- 

 corolla, strongly hispiduious. — With the habit of P. microglossa. 

 Common in the shade on mountains and hillsides about Los Angeles 

 Bay. (5G8.) 



Perityle Palmeri. Of the P. leptoghssa grou]i ; a low peren- 

 nial (?) with herbaceous succulent brittle stems, glandular-villous when 

 young, becoming finely pubescent or subglabrate below : leaves thin, 

 bi'oadly ovate, acute, subcordate at base, very acutely lobed and 

 toothed, the petiole equalling or exceeding the blade (1 or 2 inches 

 long): peduncles Ih to 3 inches long; heads 4 or 5 lines long, the 

 bracts very narrow, acuminate : flowers golden yellow ; ray 4 lines 

 long : achenes strongly ciliate, a line long, the prominent crown deeply 

 fimbriate, the hispiduious awn equalling the disk-corolla. — In crevices 

 of bare but shaded rocks ; Guaymas. (308.) 



RiDDELLiA CooPERi, Gray. Mountains about Los Angeles Bay. 

 (538.) 



Palafoxia. linearis. Lag. Sandy plains ; Los Angeles Bay. 

 (58L) 



Porophyllum gracile, Benth. Hillsides near Los Angeles 

 Bay. (555.) 



Porophyllum Seemanni, Schultz Bip., var., with larger heads of 

 white flowers. '• J\lara villa" ; used for headache. Crevices of ex- 

 posed rocks high in the mountains about Guayma'^. (279.) 



Porophyllum crassifolium. SufFruticose, mucli branched and 

 compact: leaves somewhat fleshy, linear, attenuate at base, gland- 

 tipped and often setosely apiculate, i to 1 inch long or often less : 

 heads terminal on the short stout branchlets ; bracts broad, obtuse, 3 

 or 4 lines long, the yellowish flowers nearly twice longer: achenes 1| 

 lines long. — Apparently nerfr P. tridentatum, Benth., from Magdalena 

 Bay, but the leaves are wholly entire and the flowers are much longer 



