44 ILLUSTRATIONS OF INDIAN BOTANY.
The following Synopsis of the Fast Tndian species Drosera and Parnassia, drawn up by Dr. G. A. Walker Arnott, and published in the Companion to the Botanical Magazine, I republish entire, that work being but little known in India.
SYNOPSIS OF THE EAST INDIAN SPECIES OF DROSERA AND PARNASSIA.
Drosera. Linn. § 1. EOCELLA. D C. 1. D. umhellala (Lour.); acaulis, foliis ovalibus Jonge petiolatis, scapo apice umbellato 5-floro.— Lour. Cock. {ed. Willd.) I. p. 232. D C. Prod. 1. p. 317- Don in Mill. Diet. 1. p. 344. Hab. In China. This I have not seen, nov am I aware of its exist- ence in any Herbarium. Loureiro himself had never found either the recent flowers or the fruit, and is somewhat doubtful about the genus, although the ap- pearance was that of a Drosera. 2. D. Burnt anni (Vahl) ; acaulis, foliis cuneato- obovatis sessilibus reticulato-venosis, scapo paucifloro erecto capillari calyceque glabris, seminibus exarilla- tis.— Fahl, Symb. 3. p. 50. D C. Prod. 1. p. 318. Don in MM, Diet. I. p. 344. Roxb. FL Ind. 2. p. 113. Moon, Cat. Ceyl. PL p. 23. Wight el Am. Prod. FL Pen. Ind. Or. I. p. 34. Wall. Cat. «. 1242. Wight Cat. n. 120.— Burm. Th. Zeyl. t. 94. /. 2. Hab. In Ceylon. Hermann, Burmann, Moon, Macrae, Walker. Peninsula of India. Roxburgh, Heyne, Klein, Wight, Griffith. Bengal and Silhet. Wallich, Hamilton, De Silva, Cochinchina P Fin- layson. 3. D. Loureirii (Hook, et Arn.) ; acaulis, foliis ob- longo-spathulatis a petiolum subgeque longum pilosum attenuatis, scapo adscendente elongato plurifioro folia multo superante versus apicem calyceque glanduloso- pubescentibus, pedicellis calycem aequantibus, semini- bus exarillaiis. — H, et A. in Bot. Beech. Voy. p 167. tab. 31.— D. rotundifolia. Lour. Coch. (ed. Willd.) 1. p. 233. -I). Burmanni. D C. Prod. 1. p. 318 (quoad plantam Chinensem). Hab. Cochinchina. Loureiro. Canton, China, Messrs. Lay and Collie. 4. D. Jndica (Linn.) ; caule ramoso, foliis sparsis anguste linearibus apice attenuatis glanduloso-pilosis, pilis limbi latitudine longioribus rigidiusculis, petiolo brevi glabro vel minute puberulo latitudine limbum folii subaequante, racemo paucifloro calyceque copiose patentim glanduloso-pubescentibus, seminibus exaril- latis.— Linn. Sp. p. 403. D C Prod. 1. p. 319. Don in Mill. Diet. 1. p. 346. Roxb. FL Jnd. 2. p. 113. Moon, Cat. Ceyl. FL p. 23. Wight et Arn. Prod. FL Pen. Ind. Or. I. p. 34. Wall. Cat. n. 1244. Wight, Cat. n. 119.— Rheed. H. Mai. 10. t. 20. Burm. Zeyl. t. 94./. 1. Hab. Ceylon. Hermann, Burmann, Moon, Ma- crae, Walker. Peninsula of India. Roxburgh, Klein, Heyne, Wight, Campbell. Tavoy. Gomez. 5. D. Finlaysoni (Wall.); caule ramoso, foliis sparsis anguste linearibus longe subulato-attenuatis supra margineque breviter articulato-pilosis, petiolo spbgequi-lato brevi, racemis elongatis multifloris minu- tissime parceque glanduloso-puberulis, seminibus ovoideis scrobiculato-punctatis. Wall. Cat. n. 3752. , Hab. Turow Bay, Cochinchina. Finlayson. This is much larger than the preceding, and pre- sents a considerable difference in habit, but approaches too closely in character. I have only seen one speci- men, and that an imperfect one. § 2. ERGALE1UM. D C. 6. D. lunata (Ham.) ; caule erecto glabro, foliis radicalibus rotundato-reniformibus, caulinis sparsis petiolatis peltatis lunato-triangularibus, angulis duo- bus acuminatis tertio rotundato, sepalis lacero-dentatis ciliatisve ceelen qnin glabris, seminibus exarillatis. — Ham. in D V. Prod. I. p. 319. Don Prod. FL Nep. p. 212. G. Don. in Mill. Diet. 1. p. 346. Moon, Cat. Ceyl. FL p. 23. Wall. Cat. n. 1243.— D. Peltata. W'ight et Am. Prod. FL Pen. Ind. Or. I. p. 34. Wight, Cat. n. 117. Hab. Ceylon. Moon, Walker. Peninsula of India. Wight. Nepal. Hamilton, Wallich. Himalayah. Gerard. Silhet. hruce. Although I have here kept D. lunata distinct from D. peltata, I do so with much hesitation ; and the doi bts, expressed by Dr. Wight and myself in the Prodromus Fl. Penins., are somewhat confirmed by specimens from Van Diemen's Land, agreeing entirely with the above character. The only difference I can point out between the two species is, that in our plant the calyx is glabrous ; the margin is usually slightly cut or toothed, although sometimes ciliated. In Z>. peltata the calyx is all over covered with adpressed longish hairs, and the sepals are broader and shorter than in D. lunata. If they be really distinct species, it is not easy to say to which Smith's and Labillardiere's synonyms belong. Parnassia, Linn. This genus may be conveniently divided into four groups, two of W'hich belong lo Europe, N. America, and Siberia; the other twotoE asl India. I shall here give the definitions of each, with an enumeration of all the species 1 possess. § 1. Stamina slerilia in selas gractles apice glan- duliferaft desmevtia ; petala margine mtegerrima. P. Carolinians. Mich.— P. palustris. Lin. — P. pavviflora. D C., Hook. FL Bor. Am. 1. t. 27.— P. Kotzebuei, Ch. et. Scltl. § 2. Stamina sierilia in se/as volidas apice glan- duliferas desinentia ; petala basin versus fimbrtato- lacera. I. P. Wightiana (Wall.) ; foliis late cordato-ovatis subreniformibus, sinu subrotundato, biactea foliis simi- li amplectente, petalis obovato-oblongis margine infra medium in segmenta simplicia vel simpliciter furcata. tenuia ciliato-laceris, ungue brevi late cuneato, stamini
