528 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Primula, Now Species. By Prof. I. B. Balfour (Notes Roy. Bot. Garden, 

 Edinburgh, ix. pp. 1-62). — Fifty new species of Primula, mostly from China, 

 are described, with critical notes on various forms already named but not fully 

 described, or described upon scanty material. The following are the names of 

 the new species, those already in cultivation being marked*: — * Primula aemula 

 (Maximowiczii — Yunnan), P. alsoph'ila (Geranioides — Tibet), P. alt a (Denticu- 

 lata — Yunnan), P. annulata (Yunnanensis — N.-W. Yunnan), P. Calderiana 

 (Sonchifolia — Sikkim), P. celsiaeformis (Malvacea — W. China), P. Tenana 

 (Malvacea — Yunnan = P. blattariformis var. Ducloiixii) , [P. racemosa Bonati 

 is sunk as being only a poor plant of P. bathangensis], P. cephalantha (Muscarioides 

 — Yunnan), P. chionantha (Nivalis — Yunnan), *P. citrina (Auriculata — W. 

 Kansu), P. compsantha (Pulchella — Yunnan), *P. conspersa (Auriculata? — W. 

 Kansu), P. coryphaea (Bella — Burma), P. fasciculata (Auriculata? — Yunnan), 

 P. florida (Souliei — Yunnan), P. fragilis (Yunnanensis — Upper Burma), P. 

 Gageana (Amethystina — Sikkim), P. glandulifera (Minutissima — Kumaon), 

 P. Harrissii (Rosea — Afghanistan), P. helvenacea (Calliantha — N.-W. Yunnan), 

 P. indobella (Bella — Bhutan), P. leimonophila (Amethystina — Hunan), P. 

 lhasaensis (Souliei — Tibet), P. meiantha (Malacoides — Burma, Shan States), 

 P. melichlora (Minutissima — Sikkim), *P. minor (Pulchella — Yunnan), P. 

 nemoralis (Sonchifolia — Yunnan), P. oresbia (Incisa — Hunan), P. petrophyes 

 (Amethystina — Hunan), P. philoresia (Dryadifolia — N.-W. Yunnan), P. prionoles 

 (Sikkimensis — Tibet), * P. pseudomalacoides (Malacoides — Yunnan), * P. pul- 

 chelloides (Pulchella — N.-W. Yunnan), P. rhodantha (Rosea — Afghanistan), P. 

 riparia (Mollis — Kansu), P. rosiflora (Rosea — Chitral), P. rupicola (Souliei — 

 Yunnan), P. sciophila (Bella — Upper Burma), P. seclusa (P. Mollis — Yunnan) 

 *P. sinomollis (Mollis — Yunnan) and var. alba (Yunnan), * P. sphaerocephala 

 (= P. capitata Forrest — Sphaerocephala — Yunnan), P. stolonifera (Denticulata 

 — Yunnan), P. tanupoda (Auriculata — W. Himalaya), P. taraxacoides (Sonchifolia 

 — Yunnan), P. Traillii (Sikkimensis — N.-W. Himalaya), P. Umbrella (Yunnan- 

 ensis — Yunnan), P. Viola- grandis (Omphalogramma — Kansu), P. Waddellii 

 (Minutissima — Tibet), P. Walioni (Sikkimensis — Tibet), * P. Wardii (Auriculata 

 —Yunnan), P. Woodwardii (Nivalis— N.-W. China). — F. J. C. 



Primula pycnoloba (Bot. Mag. tab. 8612). — Szechuan. Family Primulaceae. 

 Tribe Primuleae. Herb with root-buds. Leaves cordate, 6 in. across. Scape to 

 8 in. high, with a dense-flowered raceme. Flowers bracteate, bracts lanceolate, 

 i£ in. long. Calyx sub-foliaceous, \\ in. long. Corolla \ in. across, dark pink. 



G. H. 



Primula sinensis, Variegation in. By R. P. Gregory (Jour. Gen. iv. pp. 305, 322, 

 Apr. 1915 ; plates). — A race of Primula sinensis, having light green or yellow 

 foliage, and producing also variegated forms, was investigated. The green, 

 variegated, and pale yellowish-green characters are transmitted entirely by the 

 egg-cells, the pollen exerting no influence on these characters. The author brings 

 forward an hypothesis to account for the phenomena. — F. J. C. 



Promenaea microptera (Bot. Mag. tab. 8631). — Tropical South America. 

 Family Orchidaceae. Tribe Vandeae. Herb. Epiphytic. Pseudo-bulbs 

 clustered, £ in. long, 2-foliate. Leaves 3-3^ in. long. Flowers pale green, 2 in. 

 across. Lip 3-lobed, f in. long, with two transverse red bars and three spots at 

 the tip. — G. H. 



Pteronia incana. By P. Hariot (Le Jard. vol. xxix. p. 305). — Pteronia 

 incana is a branching shrub about three feet in height, with numerous heads of 

 yellow flowers. It is widely distributed in Africa from Namaqualand to Albany. 



5. E. W. 



Pyrethrum cinerariaefolium, The Cultivation of, in France (Rev. Hort. d'Alg. 

 No. 10, Oct. 1913, p. 382). — This plant, which has hitherto been largely culti- 

 vated in Dalmatia and Montenegro for the production of pyrethrum powder 

 to be used in insecticides, has been proved to grow and flourish in Southern 

 France and in the French African colonies. Hitherto the low price at which 

 the powder is procurable has made the cultivation of it not sufficiently profitable 

 in France, but the Balkan wars so much restricted the output in the original 

 home of the industry that a price may now be obtained for it which it is contended 

 would make the crop quite remunerative in France and Algeria. This article 

 describes the method of cultivation, and gives a chemical analysis of the powder and 

 an account of the system of collection and distribution in the various original 

 centres of the trade. — M. L. H. 



