OP ARTS AND SCIENCES, 63 



base : nutlet globose, nearly | line broad : cotyledons thick, orbicular. 



— Very common ou sandy bottoms near Los Angeles Bay. (J17.) 



A flowering specimen collected by M. E. Jones at San Quentin is 



probably the same, but is more woody and apparently perennial. 

 IIeliotropium Curassavicuji, Linn. Muleje. (15.) 

 Heliotropium phyllostachyuji, Torr. On rocky mesas at 



Guaymas. (232.) 



Krynitzkia angustifolia, Gray. The root was formerly used as 



a purple dye by the Indians. On stony ridges at Los Angeles Bay. 



(Gi)6.) 



Krynitzkia ramosissima, Greene. Stony ridges, Los Angeles 

 Bay. (551.) 



Ipom(EA coccinea, Linn. Mountain ravines near Guaymas. (310.) 

 Ipomcea hederacea, Jacq. In ravines near Guaymas. (295.) 

 Ipomcea leptotoma, Torr. Very common about Guaymas. (231.) 

 Ipomcea Bona-nox, Linn. River-banks at Muleje. (33.) 

 Ipomcea triloba, Linn., var., with glabrous calyx. Collected also 

 by Pringle in 1884 in Santa Cruz Valley, Arizona, and by Palmer 

 (213) in 1885 in Chihuahua. In hedges and ravines about Guaymas. 

 (306.) 



Ipomcea Palmert. A vigorous climber, glabrous : leaves digi- 

 tately divided, on slender petioles, the 5 segments Imear-lanceolate, 

 attenuate to each end, obtusish, 1 to 4 inches long: peduncles 1- 

 flowered, 2 to 4 inches long : calyx glabrous, becoming li inches 

 long, the sepals oblong, obtuse, chartaceous in fruit ; corolla white, 2 

 inches long, with broad tube and rather narrow limb : anthers much 

 twisted, a little exserted : stigma biglobose : capsule globose, h inch 

 broad, 4-valved, 4-seeded ; seeds very finely pubescent. — "Flowers 

 with the odor of Stramonium." JSIargin of a dry creek-bed near 

 Guaymas. (75.) 



Jacquemontia Prtnc^lei, Gray, var. glabrescens. Gray. Flow- 

 ers "pale blue with white lines." Hills near Guaymas. (294.) 



Jacquemontia Palmeri. An erect slender annual, or at length 

 somewhat climbing, simple or branched, a foot high or more, sparingly 

 soft-pubescent : leaves ovate, usually cordate at base, acute, punctate, 

 15 lines long or much less, rather shortly petiolate : flowers few (1 to 

 5), scattered on slender peduncles : calyx-lobes ovate-lanceolate, 2 to 

 2| lines long; corolla blue, 3 or 4 lines long: capsule globose, equalling 

 the calyx, the four valves splitting equally to the base : seeds somewhat 

 roughened. — In shade in the mountains about Guaymas. (221.) 

 E VOLVULUS LiNiFOLius, Linn. Mountains about Guaymas. ■J291.) 



