VOL. III.] Recent Litei'atitre. 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 L. elegans, but differs, however, by the considerably 

 larger size of the leaves and the variation of nervation. 



Hausmannia Forchhamvieri apparently represents a distinct type. 

 It has the appearance of Jea7ipaiilia 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 Haiisma)i- 

 nia show the same peculiar difference as does Platycerhini of the 

 recent. Concerning the arrangement of the sori, this new species 

 agrees with Clathropteris 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 Anmcal 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 Pronnba synthetica, Prodoxus ptilverulentns, P. y-inversus, 

 P. reticulatiis, P. coloradocnsis 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 

 capacity for belief 



The succeeding papers are: Notes and Observations on Yucca, 

 with many good photographs and several detail drawings by Engel- 



