410 PROCEEDINGS OF THE AMERICAN ACADEMY 



the sides ; the soft apiculation inconspicuous and at length deciduous. 

 Hartweg's specimens are small, few-flowered, and not in fruit. With- 

 out much doubt the S. tenella of Greene, from the Little Chico Creek, 

 is a depauperate and very branching form of S. Hartwegi, with flowers 

 much reduced in size. Prof. Rattan collected specimens on Stony 

 Creek, Colusa Co., which are fairly intermediate. 



S. HiRSUTA, Gray, PI. Wright, i. 16, (which in PI. Fendl. and PI. 

 Hartw. I mistook for Nuttall's Sida delphinifolia,) is stout, taller, with 

 more or less hirsute pubescence ; the stem and erect branches termi- 

 nated with a dense spike or spiciform cluster of flowers ; the corolla 

 more rose-colored, from three fourths to nearly a full inch long. The 

 carpels were very well described long ago in PI. Fendl., and well 

 figured in my Genera Illustrated. They are not sensibly incurved, 

 are surmounted by a conspicuous soft and hairy beak, the thin ventral 

 portion tears open on separation from the receptacle, and the back is 

 lightly reticulated. 



S. CALYCOSA, of Marcus E. Jones in the American Naturalist, from 

 Duncan's Mills, on Russian River, is a badly named but apparently 

 good species, nearly allied to the preceding. Its calyx-lobes are broader, 

 shorter, and hirsutely long-ciliate ; the carpels are striately nervose 

 on the back (the reticulations being very long and narrow) ; and the 

 apiculation is apparently obsolete. This proves to be the S. sidcata of 

 Curran, fide Greene in Bull. Calif. Acad. i. 79, a better name. 



S. DIPLOSCTPHA, Gray, the remaining species of the group, is not 

 to be confounded with any other ; but the variety, minor, seems to be 

 well marked. This species and S. Ursula ought to be in ornamental 

 cultivation. 



LYONOTHAMNUS, Gray, Proc. Am. Acad. xx. 291. 



Char, fruct. Folliculi 2 (rarissime 3) parvi, ovati, stylo brevi 

 demum deciduo mutici, crasso-coriacei, glandulis substipitatis scabrati, 

 sutura ventrali (demumque dorsali ?) dehiscentes. Semina (1 vel 2 

 maturescentia) elongato-oblonga, parum arcuata ; testa membranacea 

 secus raphen anguste alato-marginata. Embryo (vix matura) in al- 

 bumine parco inclusus, leviter arcuatus ; radicula supera cotyledonibus 

 oblongis paullo breviore. 



LYONOTHAMNUS FLORTBUNDUS, Gray, 1. c. TJpon revisiting the 

 island of Santa Catalina in the early part of the summer of 1885, Mr. 

 Lyon collected specimens of this interesting shrub, with forming fruit, 

 not quite mature indeed, but enough so to furnish a few seeds with a 



