Pilanzengeographie und Pflanzengeschichte erschienenen Arbeiten. 81 
Periteria laeta *616, selligera *372, — Phalaenopsis Foerstermanni 244, Reg- 
nieriana *746, 
Restrepia pandurata 244, 
Saccolabium Pechei 447, Smeeanum *244. — Schomburgkia Thomsoniana *38. 
— Spathoglottis Regnieri 174, 
Vanda Amesiana 764. 
Ridley, H. N.: On a new genus of Orchideae from the island of St. Thomas, 
West-Africa. — Journ. of the Linn. soc. Bot. XXIV. p. 197—200, 
pl. VI. 
Orestia elegans. 
Rolfe, R. A.: On bigenerie Orchid hybrids. — Journ. of the Linn. soc. Bot. 
XXIV. p. 156—170, pl. IV, and 2 woodc. 
Webster, A. D.: On the growth and fertilisation of Cypripedium Calceolus. 
— Transact. and Proceed, of the bot. soc. of Edinburgh. XVI, part 3. 
—— Fertilization of Epipactis latifolia. — Bot. Gazette 1887. p. 104. 
Palmae. 
Beccari, O.: Le palme incluse nel genere Cocos. — Malpighia 1887. p. 343. 
Bower, F. O.: On the mode of climbing in the genus Calamus. — Annals 
of Bot. I. p. 125—131. 
Drude, O.: Pritchardia Thurstoni F. v. Müll. et Drude, n.sp. — Gartenflora 
1887. p. 486—490. 
Palmae. — EnsLer-Prante's Natürl. Pflanzenfam. II. 3. p. 1—93. 
Gehrke, Otto: Beiträge zur Kenntnis der Anatomie von Palmenkeimlingen. 
— Inaug. Diss. 29 p. 8° Berlin 1887. 
Pandanaceae. 
Solms-Laubach, H. Graf zu: Pandanaceae. — EwcrER-PmaNTL's Natürl. 
Pflanzenfam. Il. 4. p. 186—191. 
Pontederiaceae. 
Hooker, J. D.: Hydrothrix, a new genus of Pontederiaceae. — Annals of 
Botany. I. p. 89—94, pl. VII. 
Vaterl, Brasilien. 
Potamogetonaceae. 
Fryer, A.: Notes on Pondweeds. — Journ. of Bot. XXV. (1887). p. 50—52. 
113—115, 163—165, 306—310. 
Rapateaceae. 
Engler, A.: Rapateaceae. — EwcLER-PmawTL's Natürl. Pflanzenfam. II. 4. 
p. 28—31. 
Restionaceae. 
Hieronymus, G.: Restionaceae. — EwvcLER-PnawTUs Natürl. Pflanzenfam. 
II. 4. p. 3—10. 
