436 Pteridophyten. — Floristik, Geographie, Systematik etc. 



Campbell, D. H., The embryo and young Sporophyte of 

 Angiopteris and Kaulfussia. (Ann. du Jard. bot. de Buitenzorg. 

 3ieme Supplement. (Treub Festschrift) I. p. 69—82. 1910.; 



It is probable that in all Maraitiaceae stem, leaf and root arise 

 from the epibasal part of the embryo, in Danaea the primary hj^po- 

 basal cell forms a suspensor and all of the organs including the 

 foot are of epibasal origin. In Kaulfussia and Angiopteris stem and 

 leaf do not take up all of the epibasal tissue, a portion also contri- 

 butes to the foot. 



The stem apex usually shows a Single initial cell which possibly 

 may be derived directly from one of the primary quadrants of the 

 embryo, the cotyledon cannot certainly be traced back to one of 

 the primary quadrants and does not seem to be always formed from 

 the same portion of the embryo, it shows no definite apical cell. 



The root arises secondarily, is endogenous and of epibasal 

 origin, it grows from a Single initial cell. 



The foot is very large in the young embryo but laier almost 

 obliterated by the growth of the root. No vascular cylinder is formed 

 in the stem region of the young sporophyte, the vascular bündle 

 of the leaf is continued without Interruption with the root, and the 

 young sporophyte appears bipolar. 



The bündle of the leaf petiole is concentric, that of the root diarch. 



The vascular System of the stem of the young sporophyte is 

 built up of the leaf traces alone. Th. Weevers. 



Blumer, J. C, A Comparison between two Mountain 

 Sides. (The Plant World. XIII. p. 134—140. 1910.) 



By a reconnaissance of the Rincon Mountains of southern 

 Arizona, the author considers it apparent that there is a consi- 

 derable difference in the plant covering between the two sides of 

 the ränge. He summarizes in a categoric manner how the east side 

 of the ränge differs from the west side, for example in the diffe- 

 rences of timber lives, size of the trees, number of species, and 

 character of the species. John W. Harshberger. 



Lunell, J., New plants from North Dakota. (Amer. Midland 

 Nat. I. p. 204—208. June 15, 1910.) 



Chamaesyce aeqiiata, C. aeqiiata claiidicans, C. erecta, Ranuncu- 

 lus eremogenes longissimus, Seriecio Purshianus viridescens and Cori- 

 spermfumj siinplicissimuni. Trelease. 



Mackenzie, K. K., Notes on Carex. VI. (Bull. Torrey bot. Club. 

 XXXVII. p. 231-250. May 1910.) 



Contains, as new: Carex colorata, C. biltnioreana, C. impressa, 

 (C. riparia impressa S. H. Wright), C. aestivaliforinis, C. fulvescens, 

 C. Bushii, (C. hirsuta cuspidata Dewey), C. hirtifolia (C. pubescens 

 Muhl.), C. caniporum (C, marcida Boott), C nonnalis [C. niirabilis 

 Dewey), C. glacialis (C. pedata Wahl.), C. Farwellii (C. deßexa Fav- 

 wellii Britt.), C. abscondita (C. ptychocarpa Steud.), C. debiliformis 

 (C. cimiatnomea Olney), C. Howei (C. interior capillacea Bailey), C. 

 rhonialea (C, saxatiUs rhonialea Fernald), C. rnesochorea (C. mediter- 

 ranea Mack.), C. aggregata (C. agglomerata Mack.), and C. Swanii 

 (C. virescens Swanii Fernald). Trelease. 



