186 Floristik, Geographie, Systematik etc. 



figure only; D. ursipes, f. 116, differs from D. polylepis C. Chr. by 

 the sori locating very near the costa or costules. Elaphoglossuni 

 laurifoUum (Thouars) Moore, f. 117A, B, new descr. Hypolepis alte- 

 gracillima, f. USA, B, differs from H. tenuifolia Bernh. by the 

 much thinner fronds with quite obtusely lobed terminal Segments. 

 Leptochilus angiistipinnus, f. 119, separable from L. virens by the 

 much longer and narrower pinna; L. Kanashiroi i. 120A, B, C, with 

 broad pinnae of the fertile fronds. Microlepia hirsutissima , f. 121 A, B, 

 differs from M. obtusiloba by the bipinnacifid fronds. Notholaena hir- 

 suta Desv., f. r22A, B, new descr.; Polybotrya duplicato serrata, 

 f. 123 A, separable from P. appendiculata J. Sm. by the much thin- 

 ner fertile pinnae, and duplicately serrate sterile pinnae with very 

 Short bristles at the sinus; P. tnarginata Bl.. new descr. Polypodiutn 

 aspidistrifrons , f. 123 A, B, differs from P. irioides Lam. in having 

 nearly sessile fronds of much thinner texture; P. ^/zm^^ö-wz/m C. Chr., 

 f. r24A, B, near Loxogramine involuta Presl, but with much thinner 

 fronds with erose margin; P. ensato-sessilifrons, f. 126A. B, differs 

 from P. hemionitideum Wall, by the fronds with a suddenly tapering 

 base; P. hypochrysmn, f. 127A, B; P. infra-platiicostale, f. 128 A, B; 

 P. Kanashiroi, f. 129A, B, near Prosaptia alata but distinguishable 

 from it in having triangulär lobes of the fronds; P. Kawakufnii, 

 f. 130A, B; P. kusukusense, f. 131A, B, near P. Wrightii Mett., 

 but differs by the narrower fronds of much thicker texture; P. mor- 

 riso}iense Hay., f. 133A, B, C, new descr.; P. obscure-venulosum, 

 f. 134A, B; P. remote-frondigerum, f. 135A, B, differs from Gymno- 

 gramme laticeolata Hk. by the larger reticula of the veinlets; P. 

 urceolare, f. 136, 137a — f, with many remarks on the position of the 

 genus Prosaptia. Polystichuin aculeatuni Sw. var. variiforme; P. ho- 

 lolepis, near P. varium Presl, but with more acutely toothed lobes 

 of the pinnules; P. niltakayamense Hay., f. 137i, 138; P. pseudo- 

 Maxiinowicsii, f 137f, g, h, 139; P. stibapicißoriim, f. 140. resem- 

 bles P. amabile Sm., but with undivided lowest pinnae and with 

 superior pinnae graduall}^ passing to the lobes of the apical por- 

 tions of the fronds; P. obtiisoauriculatunt , f. 144, 137e, f, near P. 

 auriculatiini Presl , but distinguishable from. it by the less scaly 

 rhachis and much obtuser auricles of the pinnae. Some new species, 

 P. leptopteron, f. 141, 137a, P. longistipes, f. 142, 137b, c and P. 

 simplicipinmcm, f. 137j, 146 belong to the group of P. tripteron Pr. 

 On this group the author brings some general remarks and a key 

 to the species of the group. Pteris Takeoi, f. 148. Vittaria sp., f. 149a; 

 d, e, f; j, k; 1, m, and V. arisanensis Hay., f. 149b, c with addi- 

 tional remarks. Woodwavdia Takeoi, somewhat allied to W. Harlandii 

 Hook, and W. Kempii Copel., but widely different from them by 

 the triangulär fronds which are bipinnately parted or lobed. 



Jongmans. 



Jeswiet, J., Eine Einteilung der Pflanzen der niederlän- 

 dischen Küstendünen in ökologischen Gruppen. (Beih. 

 bot. Cbl. 2. XXXI. p. 322-372. 1914.) 



Auch für Niederland erwies sich die Massart'sche Grup- 

 pierung, die für belgische Küstendünen entworfen wurde, als recht 

 brauchbar, wie Verf. zeigt. Die wichtigste Eigentümlichkeit der 

 Dünenflora des Nordsee-Gebietes besteht in der grossen Zahl von 

 Pflanzen, die im Winter assimilierende Organe tragen. Unter ihnen 

 gibt es eine grössere Zahl von Arten, deren Assimilationstätigkeit 



