LTTERATDRE. 159 



1886 11. N. Ridley, The Genus Liparis, Journ. Linn. Soc. vol. XXII. 



pp. 242—297. 

 1886 E. Pfit?ei", Morphologische Studium iiber die Orchideenbliime. 

 1886 M. T. Masters, On the Floral Conformation of the genus 



Cypripedium, Joutn. Linn. Soc. vol. XXII. pp. 402—422. 



1886 A. D. Webster, British Orchids. 



1886 — 92 R. A. Rolfe, Garden Orchids, Gardeners' Chronicle passim. 



1887 R. A. Rolfe, Bigeneric Orchid Hybrids, Journ. Linn. Soc. vol. 



XXIV. pp. 156—170. 

 1887 E. Pfitzer, Entwnrf eines natiirlichen System der Orchideen. 

 1887 — 90 J. D. Hooker, Orchideae of British India, Flora of British 



India, vol. Y. pp. 667—858, vol. VL pp. 1—198. 

 1887 H. N. Ridley, A Review of the Genera Microstylis and Malaxis, 



Journ. Linn. Soc. vol. XXIV. pp. 808—351. "^ 



1887 M. Mobius, Anatomie der Orchideen, Pringsheim's Jalirbuch, vol. 



XVIII. 



1888 H. N. Ridley, Notes on Self -fertilisation and Cleistogamy in 



Orchids, Journ. Linn. Soc. vol. XXIV. pp. 389- 395. 

 1888 H. Bolus, South African Orchids, Journ. Linn. Soc. vol. XXV. 



pp. 163—210. 

 1888 H. Bolus, Orchids of the Cape Peninsula. 

 1888 R. A. Rolfe, A Morphological and Systematic Review of the 



Apostasiese, Journ. Linn. Soc. vol. XXV. pp. 211 — 243. 

 1888 E, Pfitzer, Untersuchnngen iiber Bau und Entwickelung der 



Orchideenljliithe, Pringsheim's Jahrhuch, vol. XIX. 

 1888 E. Pfitzer, Orchidacece Die Xatiirlichen Pflanzenfamilien von A. 



Engler und K. Prantl. 

 1888 F. Sander, Reichenbachia, Orchids Illustrated and Described. In 



progress. 

 1889 — 93 R. A. Rolfe, List of Garden Orchids, Gardeners' Chronicle passim. 

 1890 R. A. Rolfe, On the Sexual forms of Catasetum, Journ. Linn. 



Soc. vol. XXVIL pp. 206—225. 



1890 W. Watson and W. Bean, Orchids, their Culture and Management. 



1891 H. N. Ridley, The Genus Bromheadia and Two new genera of 



Orchids from the East Indies, Joiirn. Linn. Soc. vol. XXVIII. 



pp. 331—342. 

 1891 — 93 Marquess of Lothian and Miss F. H. Wool ward. The Genus 



Masdevallia, Parts I. — V. In progress. 

 1891—94 R. A. Rolte, New Garden Orchids, Decades I.— VII. Kew 



Bulletin. In progress. 



1892 Stein, Orchideenbuch Beschreibung, Abbildung und Kulturanweisung. 



1893 D. Bois, Les Orchidees. 



1893 The Orchid Review, an illustrated monthly journal. In progre;^s. 

 1893 C. Moore, The Orchidese of New South Wales, Flora of New 

 South Wales, pp. 381—407. 



