NOTES ON HOYA. 413 



N. OPACA, Agardh.— Worcester, 1897, R. F. Toivndroiv ; Lin- 

 coln N., 1895, Maso7i d Peacock; Mid Ebudes (Tiree), 1896 S M 

 Macvicar; Carlow (1897) and King's Co. (1896), R. LI. Praeqer ; 

 Westmeatb, 1895, H. C. Levinge ; Mayo E., 1895, E. 8. Marshall; 

 Galway E., 1896, D. McArdle d R. LI. Praeger ; Eoscommon (1897) 

 and Cavan (1896), R. LI. Praeger. 



Explanation of Plate 391.— a. Ghara aspera, Willcl., subsp. desmacantha, 

 H. & J. Groves, from Brittas Lake, Westmeath : plant natural size. b. Portion 

 fern with node x 15. c. Cortex showing oblique joinings of secondary cells 

 X 60. d. Clusters of spme-cells x 15. e. Node of branchlet with antheridium 

 X 15. /•. Ditto, with fruit x 15. g. Fruit x 30. h. Oospore x 30. i. Group 

 ot spme-cells on specimen from Money Lake, Downpatrick x 15. k. Portion of 

 stem of C. aspera type, from Frensham, Surrey x 15. 



Explanation of Plate 392. — a. Nitella Mjalina, Agardh, from The Loe, 

 West Cornwall ; plant natural size. b. Portion of whorl showing a primary 

 and upper and lower secondary branchlets x 7^. c. Apices of terminal rays 

 X bO. d. Young ditto X 60. e. Node of branchlet with antheridium x 30. 

 f. Plates of antheridium x 60. g. Fruit x 30. h. Unripe oospore, broadest 

 view X 30. t. Ditto, narrowest view x 30. k. Apex of fruit, showing coronula 



NOTES ON HOYA. 



By James Bkitten, F.L.S. 



The following notes were made during a revision of the genns 

 Ho2ja as represented in the National Herbarium, and may be worth 

 placmg on record. They show, what by this time should need no 

 demonstration, that those engaged in colonial floras or other 

 systematic work would find it to the interests of science and to 

 tlieir own advantage to consult the material preserved in the 

 British Museum. -^^ 



HoYA ACUTA Haworth. 

 This plant stands in the Index Kewensis and in the Flora of 

 British India as H. parasitica Wall. ; but the synonymy given by 

 James Traill (who first published Wallich's name, under which he 

 had sent the plant to Kew, in his important paper on the genus in 

 Trans. Hort. Soc. vii. 16-30 (1827) )t makes it evident that 

 Haworth s name must stand, unless the permanence of the first 

 specific name be maintained. Traill's synonymy, to which I have 

 added dates, runs thus : — 



*'H. acuta, Haicorth Rev. Plant. Slice, p. 4 [1821] . 

 H. lanceolata, Lindley in Don's Cat. edit. ii. p. 92 [1826] . 

 H. pallida, Lindley in Bot. Reg. vol. 11, folio 951 [Feb. 1826] 

 H. albens? [John] Miller's {Bristol) Cat. 1826." 



* Thus in the next genus to this in Fl. Brit. Ind., Sir Joseph Hooker says • 

 Dischidia clavata, Wall. Cat. 4209, is unknown to me ; I have not found it in 

 Walhch s Herbarium at the Linnean Society." But the number is in the 

 British Museum Herbarium. 



t This paper is cited as of 1830 in Ind. Kewensis, but the part of the volume 

 which contains it was published in 1827, ^ vuiumc 



