17G TirK .luUKNAL or botany 



R. veniicifera, It. ccaeiiata ; Rata yraveolejis ; Scilla ; Si/mplo- 



carpus foetidas \ Syringa valgaris \ Thapala; Urtica\ Vanilla 



(Oppenheim, Boston Med. Jourii. 1893, vol. ii. p. 1272; Hilev, 

 It. F., Lancet, 19U9, vol. i. p. 1483). 



GeNEHAL LlTEKATLRE. 



Adelung, E. (1913), "■ An Experimental Study of Poison Oak," Arch. Inter. 



Med. i. p. 148. 

 AuLD (1907), " Satin-wood Der.natitis," Lancet, p. 1703. 

 JBarton, E. a. (1899), " Primula obconica," Lancet, voL i. p. 1717. 

 Bean, W. J. (1908), ''Rhus Toxicodendron,'' Kew Bulletin, p. 455. 

 Oastellani, "Tropical Medicine and Hygiene,"' p. 118. 

 Dobbin, L. (1919), " Formic Acid in Nettle," Proc. Roy. Soc. Edin. p. 120. 

 FcERSTER, O. H. (1910), "■Primula Dermatitis," Journ. Amer. Assoc, vol. Iv. 



p. 642. 

 GiLLETT & Stott (1896), " Poison of the Primula." Lancet, vol. i. p. 1040. 

 Haberlandt, " Physiological Plant Anatomy," p. 131. 

 HoRNSET (1908), " Eing-us," Brit. Journ. Dermat, vol. xvii. p. 447. 

 Nestler, A. (1900), "Irritant Effect on Skin of Primida obconica and P. 



sinensis, Berichte der Botan. Gesellsch. vol. xviii. p. 189. 

 Nestler, A. (1908), "Primula mollis," Ber. Botan. Gesellsch. vol. xxvi. 



p. 468. 

 NoTT (1910), " i?./iHS Tojico(ife/*(?/-o/i Dermatitis," Brit. Med, Journ. vol. ii. 



p. 545. 

 Oldacres (1889), " Toxic Symptoms produced by Primida obconica," Brit. 



Med. Journ. vol. ii. p. 719. 

 Petrie, J. M. (1906), " Laportea gigas," Proc. Linn. Soc. N.S. Wales, 



vol. xxxi. p. 530; 

 Pfapf, Fr. (1897), " Active Principle oi Rhus Toxicodendron and R. venenata," 



Journ. Exper. Med. vol. ii. p. 181. 

 RosT (1914), '' PHmxda Dermatitis," Medizinische Klinik, pp. 101, 155, 198. 

 Sabouraud (1919), " Primula," Entretiens Dermatolog-ique, p. 383. 

 , Sequeira (1919), " Diseases of the Skin," ed. 3, p. 91. 

 Smith, B., " Poisonous Plants of all Countries." 



Varigny, H. de (1911), " Primula Poisoning," Rev. Hort. Beige, p. 95. 

 Walsh, D. (1910), " Lily Dermatitis," Brit. Med. Journ. vol. ii. p. 854. 

 Weydahl (1908), " Influence of Different Conditions of Life on Toxic 



Formation of Hairs in Primula obconica," Gartenflora, vol. Iv. p. 449. 

 White, J. Prosser, " Occupational Affections of the Skin." 



A NEW SPECIES OF COUPOUI. 



By James Ladbbook 

 (Department of Botany, British Mviseum). 



Tn this Journal for April (p. 105) Dr. Wernham gives an account 

 of the genus Couponi, which had been placed by Miers in Apocijuacece 

 but is now assigned to Ruhiacece. To the three species described 

 (/. c.) I now add a fourth, which I found in the Hei'barium among 

 the imnamed specimens of Taherncemontana ; it was, like C. aquatica 

 and C. Ma7'tiniana, collected by Martin in Guiana. The species may 

 be characterized as follows : 



Coupoui micrantha mihi, sp. nov. Folia basi acuta, petioli flores 

 non excedentes velut ramuli inflorescentiie graciles, glabri : cahcis 

 limbus marline truncatus. 



