33 



California Art & Nature 



34 



PI.ANORBIS PARVUS Say. 



Living: All British Amer.ca. and United 

 Stales. Manitoba to New Mexico. Can- 

 tillaii canyon, Baja California (Orcutt). 



PLANORBIS PENINSULARTS Cp. 



"Shell with both sides concave, the 

 right with whorls rounded, their edge 

 forming an obtuse margin, and the outer 

 one rartly enclos.ng the others so that it 

 forms twc-thiids the greater diameter of 

 shell. Whorls 5, visible on both sides, the 

 rounded (or right) surface showing less 

 of them than the other. Left (or umbil- 

 ica'.?) surface nearly flat, deeply concave 

 nef;r middle, the umbilicus being over 

 one-third of diameter. Mouth trapezoid- 

 al, very cbl.que, its lips curved, the right 

 extremity attached n ar the concave 

 spire, the left to the obtuse periphery of 

 she:!. Mouth one-third longer than wide; 

 itf. breadfh over one-third that of shell. 

 Grra'er diameter 0.16, least 0.05 inch. Col- 

 or bro^ n, sur'ace smooth."— Cooper, Cal. 

 ac pr 2d ser. 3: 342. 



Ty e locali^^y: "With P. anitensis, in 

 same laguna." 



PLANORBIS SUBCRENATUS Cpr. 



Shell tumid, very thin, horn-colored; 

 whorU; C, rounded, sutures impressed; 

 with sharp radiating, fomewhat crowd- 

 ed and occasionally minutely crenulated 

 rldgfs; aper'urct rounded, parietal wall 

 sm^/1. scarcely touching the penultimate 

 whorl; labrum slightly deflected, fus- 

 riu I within: umbilicus deep. Diameter 

 li height P mm. 



Lv ng: Oregon (Nuttall). British Co- 

 lumbia to Baja California. 



PliANORBIS TUMENS Cpr. 



Shell rapidly swelling, horn or red^ 

 d>h smo'Ke-colored; whorls 4 or 5, with 

 light waving striae; sutures deeply im- 

 pre;s:d: en one side subangulate or sub- 

 cari-ir. : -> near the suture, on the other 

 rounded; umbilicus very deep; aperture 

 with r. sinuous edge, one side standing 

 out above, flattened below, the other 

 flatt' n^d above, produced below, capa- 

 cious and rounded: labrum very thin. 

 Diar-eter 15, height 6.5 mm. 



Lvin<?: Mazatlan; Baja Californ a; 

 San Francisco, Petaluma, and southern 

 Ca 1" r ia. 



PLANORBIS TUMIDUS Pfeiffer. 



She'l cpao.ue. pale horn colored or smo- 

 ky, densely and finely striated, umbili- 

 cated above, slightly concave be'ow; 

 whor'a 5, convex, subcarinated on each 

 side, ra^^idly increasing, separated by a 

 deci suture; aperture oblique,, lunate- 

 rounded, somewhat kidney-shaped. Di- 

 ameter 18, he'ght 6 mm. 



Living: Texas. Los Angeles, Califor- 

 nia. Nicaragua (T. Brydgei). Guatema- 

 la. 



COCHLICOPA LUBRICA Muell. 



Ferru=sacia subcylindrica L. 

 Griz7ly Peak, Berkeley, Cal. (H. Hemp- 

 hill); Oregon; Alaska, 



PHYLLOCACTUS LATIFRONS Walp. 

 The Queen cactus is quite the giant 

 among the Phyllocacti, the stout flat- 

 tened stems 4 to 5 inches broad, deeply 

 cienated and coinmonly 8 to 10 feet 

 high. The flowers are 7 to 8 inches long, 

 about 6 Inches in diameter, the petals 

 of a delicate, clear, creamy white, the 

 sepals and tube of a reddish hue. Na- 

 tive of Mexico. 



OPUNTIA BASILARIS Engelm. & Bigelow. 

 Low; joints 5 to 8 inches long, triangular, 

 proliferous from their base, pubescent, un- 

 armed, but beset with numerous dense fasci- 

 cles of short brownish bristles, as is also the 

 ovary. Flo"wers large, 2% to 4 inches in 

 diameter, bright magenta, and very numer- 

 ous: fruit dry, with large and thick seeds. 



Var RAMOSA Parish. In cultivation the 

 typical form becomes branched like the va- 

 riety. On* of the most satisfactory cacti that 

 we know for an amateur's collection, flo'wering 

 profusely and growing readily. In the deserts 

 of California, Arizona, Nevada and Mexico, 

 the whole plant sometimes assum.es a 'brown- 

 ish red, but in cultivation it seems to main- 

 tain a glaucous green color. 



CHINESE WEEPING LILAC. 

 Its gracefulness of form, its curiously 

 arranged leaves, in pairs and set like a 

 bird's v^ings in flight, its honey-scented 

 clusters of white flowers, makes this a 

 unique shrub among decorative plants. 

 Our figure shows it grafted upon the 

 common lilac, producing a fine tree. 



