OF ARTS AND SCIENCES. 49 



Acacia cochliacantha, Humb. & Bonpl. A small tree, 10 feet 

 high and 2 inches thick, with fragrant flowers, and straight or curved 

 spines 3 to 5 inches long. A decoction of the thorns is used as a 

 remedy for vesical inflammation, etc. On mesas and hillsides at 

 Guaymas. (101.) 



Acacia Farnesiana, Willd. " Binorama" ; the pods are used for 

 dyeing black and for making ink, and an ointment is made of the 

 dowers for the cure of headache. About Guaymas. (305.) 



Lysiloma microphylla, Benth. A rather stiff shrub, 6 feet 

 high. In mountain canons at Guaymas. (640.) 



Calliandra Coulteri, Watson. A loose shrub, 5 feet high. 

 Mountains about Guaymas. (297.) 



Calliandra eriophylla, Benth. A stiff shrub, in high moun- 

 tain ravines. Guaymas. (293.) 



Pithecolobium (Ortholobium) Sonor^:. A shrub or small 

 tree (15 or 20 feet high), armed with short stout recurved stipular 

 spines, the foliage, inflorescence, aud younger branches canescent with 

 very short spreading pubescence: pinna? 1 or 2 pairs on a short (1 

 or 2 lines) or very short rhachis ; leaflets 10 to 15 pairs, oblong- 

 elliptical, about a line long: peduncles mostly solitary (1 to 3) in the 

 axils, 6 lines long or less; heads loose: flowers white, fragrant, finely 

 pubescent, nearly 2 lines long : pods rather thin, short-stipitate, flat, 

 straight, dehiscent, puberulent, 2 to 4 inches long by 6 to 9 lines 

 wide, 3-6-seeded. — "Una de gato"; wood very hard and taking a 

 fine polish. Common at Guaymas, and at Loreto and Muleje. (58.) 



Rhizophora Mangle, Linn. On a low island in Guaymas har- 

 bor. (342.) 



Jusslea octonervis, Lam. Guaymas. (257.) 



CExotfiera cjespitosa, Nutt. On stony ridges near Los Angeles 

 Bay. (582.) 



CExothera (Spflerostigma) angelorum. Annual, from nearly 

 acauleseent to a foot high or more ; stems slender, glabrous : lea 

 more or less finely pubescent, narrow, pinnatifid nearly to the mid- 

 nerve, the linear divaricate lobes mostly entire: flowers axillary, 

 bright yellow, about 9 lines broad: capsule very slender ( 1 to \). inches 

 long or more, by half a line wide), becoming more or less curved. — 

 Of the (E. bistorta group. Abundant in sandy valleys and on ridg< - 

 near Los Angeles Bay. (519.) 



Oenothera cardiophylla, Torr. A form with very Bmall flow- 

 ers. S. Pedro Martin Island and Los Angeles Bay. ( 103, 520.) 



GaURA PARVIFLORA. Dougl. At Mllleje. (11.) 



VOL. XXIV. (N. S. XVI.) 4 



