VOL. III. | Recent Literature. 267 
been described and figured a new species of Laccopteris, but the 
author has not ventured to name this supposed new species, since 
merely a very few specimens were discovered. This form seems to 
be related to Z. elegans, but differs, however, by the considerably 
larger size of the leaves and the variation of nervation. 
Hausmannia Forchhammeri apparently represents a distinct type. 
It has the appearance of /Jeanpaulia very much in the shape of the 
frond, being stipitate and showing some divisions; but, the second- 
ary nerves proceeding at right angles from the primary one, brings 
this form as to nervation closer to the genus Clathropteris. 
The author calls attention to the fact that the leaves of Hausman- 
nia show the same peculiar difference as does Platycerium of the 
recent. Concerning the arrangement of the sori, this new species 
agrees with C/athropteris platyphylla, in which they are scattered 
all over the dorsal face of the leaf. 
The situation of the sori in relation to the nerves, was, unfortu- 
nately, not to be distinguished in the fossil. The plates contain 
several, well-drawn figures, with some details of all the species which 
were collected. 
Third Annual Report of the Missouri Botanic Garden. The 
scientific papers are, first, A Revision of the American Species of 
Rumex occurring North of Mexico, by William Trelease. Twenty- 
three species are admitted and illustrated by as many plates, which 
though unecessarily reduced for the size of the page and deficient 
in detail will be found useful in dealing with this somewhat neglected 
group. In the second paper Dr. C. V. Riley brings together in ac- 
cessible form papers previously published on ‘‘ The Yucca Moth 
and Yucca Pollination,’’ and describes six new species of Yucca 
moths Pronuba synthetica, Prodoxus pulverulentus, P. y-inversus, 
P. reticulatus, P. coloradoensis and P. sordidus. The ten appended 
plates are devoted to the different moths and details of oviposition 
and pollination. The paper is of much interest, but the author’s © 
argument that the Pronuba deliberately gathers the pollen from one 
| flower and carries it to another with the view of fertilizing the flower 
and producing food for her young is somewhat of a draft.on our 
ity for belief. 
| She suikeeing papers are: Notes and Observations on se, 
with many good photographs and several detail drawings by Engel- 
