Floristik, Geographie, Systematik etc. 255 



luxuriently than before the eruption. This revegetation was due not 

 to seedlings but almost entirely to the recovery of old plants which 

 had been buried under the ash for three years. A large number 

 of permanent stations were marked for future study. 



W. B. McDougaü. 



Hayata, B„ Some Conifers frorn Tonkin and Yunnan. 

 (Bot. Magaz. Tokyo. XXXI, p. 113—119. 2 Textfig. 1917.) 



This paper contains enumeration and description of a small set 

 of Conifers collected by Prof. Shitaro Kawaii in the districts 

 between Yunnan and Tonkin. Some new species are described. 

 Fokienia Kawaii, near F. Hodginsii Henry et Thomas, but differs 

 from it in the shape of seeds and their wings. Cryptomeria Kawaii, 

 near C. japonica D. Don, but with much shorter secondary shales 

 with much shorter teeth. Thuja orientalis L. forma Kawaii. Taxus 

 sp. nov., somewhat near to T. cuspidata var. chinensis, but widely 

 different in general features. Unfortunately without fruits or fiowers. 

 The other species found in the same forest are: Juniperus chinensis 

 L. (probably planted), Cupressus funebris Endl and torulosa D. Don, 

 Tsuga yunnanensis Masters and Podocarpus neriifolia D. Don. 



Jongmans. 



Hofmann, J. V., Seed vitality as a factor in determining 

 forest types. (Arnes Forester. 5. p. 13 — 16. pl. 1—5. 1918.) 



The plates represent seeds, and seedlings up to the age of 1 

 year, of Pinus ponderosa, P. monticola, Pseudotsuga taxifolia, Thuja 

 plicata and Tsuga heterophylla. Trelease. 



Koidzumi, G„ Contributiones ad floram Asiae orientalis. 

 (Bot Mag. Tokyo. XXXI. p. 31—41, 128—143, 253—262. 1917.) 



These contributions contain a number of new species and many 

 notes on synonymy, distribution, and other remarks on older species. 



Ligusticum {Euligusticum) linearilobum , near L. japonicum Max., 

 buth with very narrow leaves; Evonymus Vidalii Fr. et Sav. var. 

 stenophylla; Angelica refracta F. Schmidt var. glaucophylla, var. 

 multinervis and var. Yabeana, Angelica edulis Miyabe forma triloba ; 

 Malus (Calycomeles) pisiformis (? M. pumila X baccata X spectabilis 

 C. K. Seh.), near M. cerasifera; Primula euneifolia Ledeb. var. albi- 

 flora; Orchis aristata Fisch, var. albiflora; Saussurea Riederii Herd, 

 var. albiflora; Rhododendron kamtschaticum Pall. var. albiflorum. 



An enumeration of all the species of the genus Morus is aecom- 

 panied by notes on synonymy and distribution. A number of new 

 names and new combinations are found in this enumeration; 

 Dolichostylae sect. nov.: M. nigriformis (Bureau) comb. nov. {M. alba 

 L. var. nigriformis Bureau; M. arabica (Bureau) comb. nov. (M. alba 

 L. var. arabica Bureau) ; M. mongolica C. K. Seh. var. diabolica 

 (Korea); M. rotundiloba (Siam); M. humilis, near M. bombyeis Koidz. 

 but smaller and with otherwise-shaped leaves. Sect. 2. Macromorus 

 Miq. emend. M. boninensis (Bonin Islands); M. argutidens, near 

 M. alba (Japonia, eultivated). 



Cnidium Tilingia Tak. var. pectinata ; Rosa (Synstylae) pulcherrima 

 (eultivated, Yokohama), near R. taiwanensis; R. jasminoides near 

 R. fujisanensis (Sikoku, Prov. Awa, mnt. Tsulugissan); R. sambucina 



