198 General Notes. [ March, 
Notes on some new or little known North American Limnzide., By A. G. Weth- 
erby, A.M. (joum: of the Cincinnati Soc. Nat. Hist., July, 1879.) Pages 8. 
From the auth 
AS of a kaiaa iae of the pee RR in pt eat with spe- 
cial seherceee | o those contain “Gray Collection.” By Alleyne Nichol- 
son and Robert Ethridge, Jt: Pesci I. Trilobite, Phyilopsda, Cirripedia and 
Ostracoda.) 8vo, pp. I-IV, 137-233, pls. Xx-xv. Wm. Blackwood & Sons, Edin- 
burgh and London, 1879. From the publishers. 
:0: 
GENERAL NOTES. 
BOTANY. 
SEXUAL DIFFERENTIATION IN EPIGÆA REPENS.!—The following 
remarks on Epig@a repens are confdined in Gray’s “ Synoptical 
eon of North America,’ under the generic description of that 
lan 
ae The flowers are heteromorphous and inclined to be dicecious, 
or dicecio-dimorphous. Those with fully polliniferous anthers 
seldom set fruit; their stigmas short, erect, slightly projecting 
beyond the margin of the five-toothed ring (to the teeth of whic 
they are severally adnate), the style sometimes longer than the 
stamens and projecting, sometimes shorter and included. Fully 
fertile flowers on other plants; their styles (as in the former sort 
sometimes long and exserted, sometimes shorter and included) 
with stigmas elongated and much surpassing the ring, short, linear, 
glutinous, radiately divergent; their stamens either. slightly pol- 
liniferous, or reduced to abortive filaments, or even wanting.” 
In the early spring of this year I took occasion to make some 
careful observations on this plant as it occurs in the vicinity of 
Washington City, the results of which, though i in the main con- _ 
firmatory of this description, differ from it in some respects, and ` 
afford some additional facts of special interest. 
I desire to premise that these variances and additional peculiari- 
ties are doubtless due to differences of habit in different localities, 
and not to any lack of fidelity in description 
The principal deviation which I detected from the description 
which I have quoted, was in the styles and stigmas. I found 
no heterostyly ; the length of the styles pied to the flowers- 
was about the same at all times in both forms of flowers. The 
stigma, however, presented a very different appearance in one 
form from what it did in the other. In the fertile form, in which 
the abortive stamens varied in all degrees, the lobes of the style a 
were strongly divergent and of a firm texture, with evident 
See oie the American Association for the Advancement of Sinon At Sara- 
toga, Y., September 1, - 1879, Pp ra F. Ward, A.M. 
