338 HORTICULTURE [Bot. Abbts. 



2239. Anonymous. Plants in the aroid house. Missouri Bot. Gard. Bull. 7: 35-38. PI. 

 7. 1919. — A list of 172 species and varieties of aroids. — 0. T. Wilson. 



2240. Anonymous. The Iceland poppy. Gard. Chron. Amer. 23: 162. 1 fig. 1919. 



2241. Bean, W. J. Deutzia compacta. Curtis Bot. Mag. 15: PL 8795 (colored). 1919.— 

 A shrub, native of China, from three to six feet in height, with white flowers tinged with rose; 

 it flowers in July after danger of late frosts has passed and is one of the latest of Deutzias to 

 flower, coming at a season when shrubs in flower are scarce, thus enhancing its value. — Oliver 

 A. Far well. 



2242. Bowles, E. A. Monograph for an amateur gardener's library. Jour. Roy. Hortic. 

 Soc. 43: 359-371. 1919. 



2243. Buswell, W. M. Spurred butterfly pea. Amer. Bot. 25: 112. 1919. 



2244. Charles, Mrs. M. E. S. Germination of wild cucumber. Amer. Bot. 25 : 66. 1919. 

 — Seeds of Echinosystis lobata do not germinate well if kept dry over winter, but seeds that 

 had been lying on a cement floor for a year produced thrifty vines the second spring. — W. N. 

 Clute. 



2245. Clute, Willard N. The opening of flowers. Gard. Chron. Amer. 23:87-88. 

 1919. 



2246. Clute, Willard N. Causes that produce the colors of plants. Gard. Chron. 

 Amer. 23:232. 1919. 



2247. Clute, Willard N. The structure of plants. Gard. Chron. Amer. 23:278-279. 

 1919.3 



2248. Clute, Willard N. The science of flower-gathering. Gard. Chron. Amer. 23: 

 127. 1919. — Methods of prolonging the life of cut flowers are discussed. — W. N. Clute. 



2249. Clute, Willard N. Defining double flowers. Gard. Chron. Amer. 23: 189. 

 1919. 



2250. Clute, Willard N. Flowers that are not flowers. Gard. Chron. Amer. 23: 49-50 

 1919. — Composites and other flower clusters are discussed. — W. N. Clute. 



2251. Clute, Willard N. Hardy houseleeks. Amer. Bot. 25: 68. 1919. — Sempervivum. 

 tectorum reported as enduring temperatures of — 20°F. in northern Illinois. The plants are 

 noted for seldom blooming, but these plants bloomed the following year. — W. N. Clute. 



2252. Correvon, H. Icones florae alpinae plantarum. [Illustrations of alpine flora.] II 9 . 

 29 p., 17 pi., 25 fig., 14 distribution maps. [No date; copy received June 2, 1919.] — See Bot. 

 Absts. 3, Entry 2972. 



2253. Correvon, H. Icones florae alpinae plantarum. II 10 . 36 p., 16 pi., 25 fig. 16 dis- 

 tribution maps. [No date; copy received June 2, 1919.] — See Bot. Absts. 3, Entry 2973. 



2254. Cremata, Merlino. ' Cercas, alambradas y setos en Cuba. [Fences and hedges in 

 Cuba.] Revist. Agric. Com. y Trab. 2:330-334. 1919. — The plants suitable for hedges in 

 Cuba are described under the headings defensive hedges, hedges for adornment, for shelter 

 and for fruit. Bibliography appended. — F. M. Blodgett. 



2255. Donald, James. The rock garden. Gard. Chron. Amer. 23: 190, 191. 2 fig. 

 1919. 



2256. Easlea, Walter. Mildew resistant roses; with some suggestions as to increasing 

 their number. Jour. Roy. Hortic. Soc. 43:253-260. 1919. — This paper is a discussion of 

 breeding roses for mildew resistance. A list of varieties more or less resistant to mildew is 

 appended. [See Bot. Absts. 3, Entry 2119.]— J. K. Shaw. 



