328 REVISION OF THE SPECIFIC FORMS OF THE GENUS GYPSOPHILA. 



descriptions, are scarcely identifiable, viz., G. tenella and f/randi- 

 fiora Poir., and G. Patrini and thesii/olia Ser. : and other forms 

 referable to Saponaria and Tunica. 



From 1824 to 1860 (excluding Boissier's species). — This includes 

 twenty-one species, some of which were first described under Hetero- 

 chroa (1833) and Dichorjlottis (1835), two genera which have not been 

 retained, and which were founded for some supposed aberrant forms 

 of Gijpsojihila. In order of date, they are : — 



G. cerastioicles (1825), of Nepaul, for which two new genera were 

 subsequently proposed. 



G. Arrostii (1829), perhaps the only species of economic value. 



G. Gmelini and Heterochroa petrcea (1833). 



G. uralensis (1834), in Russia. 



Dichof/lottis lincarifolia, D, desertorum, and G. trichotoma (1835). 



Heterochroa v'lolacca and G. saUr/na (1836). 



G. nana (1838), in the ' Nouv. Fl. du Peloponnese.' 



G. tubulosa (1842), described and figuredin ' Illustr. Plant. Orient.' 



G. Szoivitzii, fioribunda, microphijUa, and davurLca, in Ledebour's 

 ♦ Fl. Rossica,' i. (1842). 



G. sperriuUcfoUa Griseb. (1843), not to be confused with G. sper- 

 (julifoJia Jaub. et Spach, which probably should be referred to 

 Acanthophyllum. 



The other four of this period include VicJwglottis australis (1847), 

 G. hispanica (1853), G. vielampoda and G. alsinoides (1860). 



The next two species described were G. pilulifera and G. jyicta, 

 in Tchihatcheff's *Asie Mineure' (Pt. iii. Botanique), in 1866. 



Boissier's Species. — We now come to the publication of the * Fl. 

 Orientalis' (1867). Including a few scattered through the pre- 

 viously published series of ' Diagnoses,' twenty-four of the species 

 enumerated in this revision (nearly one-third of the whole number) 

 are to be found in Boissier's great work : this therefore brings the 

 number of species up to sixty-three. 



From 1867 to the present year, thirteen species have been added 

 to the list : — 



G. Oldhamiana (1867-8), found in Korea, and first referred to 

 G. altissima. 



G. imhricata and Meyeri, in Ruprecht's ' Flora Caucasi ' (1869). 



G. sedi/olia, of Western Tibet (1872), vide Hook, ' Fl. of Brit. 

 India,' i. 



G. hrachypetala, of Turkestan (1873), vide ' Suppl. Fl. Orient.' 

 (1889). 



G. montana (1882). Specimens of this plant were sent from 

 Aden in 1872, but were not described or named. Dr. Bayley 

 Balfour re-discovered the species in his exploration of the Island of 

 Socotra, and further described two varieties in different localities of 

 the island. About the same time the species was discovered by M. 

 Revoil in his exploration of Somali-land, and the plant was subse- 

 quently described under the name of G. somalensis by Prof. Franchet, 

 the year after the publication of Dr. Balfour's name. The Somali- 

 laud specimens are glabrous. The plant is certainly very similar 



