LES ESPECES DU GENRE MATTHIOLA 449 
again commend this volume, which may be accepted as a trustworthy 
guide to the student of the past history of the Pteridophytes and 
Gymnosperms, Ww. 0 
Les espéces du genre Matthiola. Par Pascat Conti. Préface par R. 
opat. (Mémoires de |’Herbier Boissier, No. 18, pp. 1-86, 
20 Aug. 1900.) _ 
Pascat Conti, who died on Aug. 2nd, 1898, at the age of 
twenty-four, was first a pupil and then an assistant to Prof. 
Chodat in the Botanical Laboratory of the University of Geneva. 
The work bef is of considerable merit, and shows a wide 
owledge eg 
promising has been so abruptly terminated. The species of Mathiola, 
to adopt the original spelling, may be grouped in two categories— 
the sand-loving species, of which European examples are M, sinuata 
and M. tricuspidata; and the rock species, represented by M. tristis 
and many others. Mathiola is primarily a Mediterranean genus, 
being limited to the regions which border the great Aralo-Medi- 
terranean depression. Few species are found beyond these limits, 
Abyssinia, M. torulosa from the Cape, and M. songarica 
su 
unéqual in numerical strength, as the former includes only M. revo- 
luta Bunge and M. khorassanica Bunge; the latter, the remaining 
i e se 
this organ is omitted; again, in group O, the group of M. elliptica 
R 
in groups A, B, D, E, we are entirely left in ignorance on this 
point. 
frequently unites plants which have been kept distinct by previous 
authors; thus h d 
series of Cheiran ( ‘ 
species is founded) are in the N ational Herbarium. A large number 
