Pteridophyten. — Floristik etc. 681 



selago subgroup and is apparently well distinguished from related 

 South American species by the contrasting direction of the leaves 

 and sporophylls, the former being strongly divaricate from the 

 Sterns, the latter imbricate and closely appressed. L. hippurideuni 

 Christ, known previously only from Costa Rica, has been found 

 in Panama. L. pithyoides Schlecht, et Cham, has been found in 

 Jalapa, Mexico. Plauts distributed as L. dichotonimn Jacq. in 

 J. D. Smith, n" 551, from Guatemala also belong to this species. 

 L. watsoyiiajium Maxon has been collected in Costa Rica. L. cu- 

 neifolimn Hieron. also occurs in Panama. Some additional Costa 

 Rican coUections are mentioned. L. suhulatuni Desv. had not yet 

 been recorded from North America. It occurs in Costa Rica 

 and Panama. Jongmans. 



Pickett, F. L., The development of the prothallium of 

 Camptosortis rhisophyllus. (The Botan. Gazette. LVII. p. 228 — 238. 

 PI. XII, XIII. 8 Text figures. 1914.) 

 The spores of Camptosortis rhisophyllus germinate very irregu- 

 larly in point of time. Prothallia bearing antheridia only and those 

 bearing both antheridia and archegonia are produced. Both anthe- 

 ridial and archegonial prothallia show a wide Variation in size and 

 form, the result of a promiscuous cell division and growth. The 

 formation of a typical V-shaped apical cell is rarely found, if at 

 all, and the apical group is usually unsymmetrically placed. Old 

 prothallia, bearing both antheridia and archegonia, may develop 

 several marginal growing regions, and may even produce prolife- 

 rations capable of independent growth. The archegonia foUow the 

 typical Leptosporangiatae in their development. The antheridia 

 usuall}'' form a neck cell before the regulär antheridial divisions. 



Jongmans. 



De Candolle, C, Meliaceae. (Nova Guinea. Resultats de l'Expedi- 

 tion scientifique neerlandaise ä la Nouvelle-Guin^e en 1907 et 

 1909, sous les auspices de Dr. H. A. Lorentz. Vol. VIII. Botanique. 

 6. p. 1011-1017. 1914.) 



Neue Arten und Varietäten: Dysoxylum hrevipaniculiini , D. 

 Gjellenipii, D. Roemeri mit forma b; Chisocheton frutescens ; Aglaia, 

 Sectio Hearnia: A. puberulanthera, A. brevipeduncula, A. Gjellerupii, 

 A. polyneura, A. Roemeri] Sectio Euaglaia: A. barbanthera und A. 

 porulifera\ species incertae sectionis: A. parvifoliola. Jongmans. 



De Candolle, C, Piperaceae. (Nova Guinea Resultats de FExpedi- 

 tion scientifique neerlandaise ä la Nouvelle-Guinee en 1907 et 

 1909, sous les auspices de Dr. H. A. Lorentz. Vol. VIII. Botanique. 

 6. p. 1005-1010. 1914.) 



Neue Arten und Varietäten: Piper peraaitilimbum, P. miniatiim 

 Bl. forma c, P. variipiluni, P. truncatibaccum , P. parvipeduncidum, 

 P. corylistachyum C. DC. var. ß piibifoliiim und 7 longanthevum , P. 

 ruf um, P. Roemeri, P. protractispiciim, P. squamuliferum . P. palli- 

 dilimbum, P. lineatipalum, und Peperomia tenuipila. Jongmans. 



Eimer, A. D. E., A fascicle of North AgusanFigs. (Leaflets 

 of Philippine Botany. VII. Art. 112. p. 2359—2415. 1914.) 

 The first part of this paper contains the description of Elmer's 



