Floristik, Geographie, Systematik etc. 411 



axils of the crowded leaves and consists of an almost closed , usually 

 five toothed involucre borne on a flattened pedicel and containing 

 3 or 4 collateral flowers, of which the two outside ones are, perhaps, 

 alwaj^s abortive; the flowers are destitute of a perianth and consist 

 of a flattened, unilocular ovarj'', terminating in a trifid style and 

 containing a solitary ovule of a peculiar type. The ovule of Juliania 

 in the flowering stage is a thin flat, obliquely horseshoe-shaped or 

 unequally twolobed body, attached to the base of the cell; it is 

 hemianatropous with a Single integument. Subsequently, in conse- 

 quence of unequal growth, it becomes horizontally oblong, nearly as 

 large as the mature seed (i.e. 6 — 8 mm. long) and almost symmetri- 

 cally two-lobed at the top. A vascular Strand runs from the point 

 of attachment to the placenta upwards near the margin into one of 

 the lobes, in which the embryo is tardily developed, and which at 

 this stage is more or less enclosed in the opposite lobe. The whole 

 of this body, with the exception of the lobe in which the embryo 

 is formed, is regarded as a funicle with a unilaterally developed 

 appendage, which breaks up and is absorbed during the development 

 of the ovule into the seed. — The ovule of Orthopterygiinn is very 

 imperfectly known, but attachment appears to be lateral and the 

 funicular appendage cup-shaped at the basal end, bilamellate upwards, 

 and more or less enclosing the embryoniferous lobe. — The Com- 

 pound fruits of the JiiUaniaceae are samaroid in form, the wing 

 being the flattened pedicel;, the nuts are almost orbicular, biconvex 

 and have a very hard endocarp. The exalbuminous seed is circular 

 or oblong, compressed, with a smooth thin testa. The embryo is 

 horizontal, with thin plano-convex, more or less oblique, obscurely 

 lobed cotyledons, which are epigaeous in germination, and a long 

 ascending radicle applied to the edges of the cotyledons. 



Juliania is confined to Mexico, while the monotj^pic Orthoptery- 

 giutn (with O. Huauciii) is found in Peru, 2000 miles distant from 

 the nearest locality of anj^ species of Juliania. In discussing the 

 afiinities of the new order the author comes to the conclusion that 

 the most natural position in a linear arrangement is between Juglan- 

 daceae and Cupuliferae, although there is also some indication of 

 relationship to the Aiiacardiaceae , especially in the anatomy. For 

 arguments in favour of this view we must refer the reader to the 

 original paper. F, E. Fritsch. 



Hill, A. W., A revision of the geophilous species of 

 Peperoynia, with some additional notes on their morpho- 

 logy and seedling structure. (Annais of Botanj'. Vol. XXI. 

 N". 82. April, 1907. p. 139—160. PL XV.) 



A Classification of the geophilous Peperomias is put forward on 

 a new basis, viz. on the character of the Underground tuber, the 

 final Separation of the species being effected mainly by the charac- 

 ters of the fruits, as in Dahlstedt's monograph; in some cases the 

 venation, texture, and internal structure of the leaf are of great 

 value. The species are placed in four sections, viz. 1) Pavifoliae 

 with a simple, smooth, more or less spherical corm, having a basal 

 tuft of roots and an apical crown of leaves (incl. P. parvijolia, P. 

 verruculosa , P. ntinuta and P. cyclaminoides) ; 2) Urnhilicatae with 

 a hypocotyledonarj^ tuber, but the roots arise irregularl)' from the 

 sides and base (incl. P. umhilicata , P. peruviana , and P. falsa, P. 

 scutellaefoli^ , P. macrorhisä); 3) Canipylotropae with a campylotro- 



