Mn LOWE, ON MADERAN BOTANY. 537 



Flores colore et magnitudine .S*. tuberosi L. Aiithera rinia loiigitudinali 

 dehiscentia; 2 — 3-imis longe productis, cornutis. Bacca cerasi magni- 

 tudine, aurantiaca, globosa. 



CoNVOLVUI.ACEvE. 



Ii8. Convolvidux solanij'oliu.s. Prim, in Trans. Cam. Phil. Soc. supra iv. I. 

 p. 22. No. .^5. 



In the first place, the discovery of the flowers of this rarest of Maderan 

 plants, authorizes the removal of the mark of doubt before affixed to 

 the generic name. They are white, and truly those of a Convolvulus. 

 Hence therefore, no change of the specific name would be necessary 

 on account of Ipomeea solanifolia L. But, though unfortunately I am 

 unable to decide the matter by reference to the Botanical Register, t. 133, 

 I have very little doubt the plant will prove identical with Coiwolvulus 

 Massoni Dietrich (C. siiff'ruticosus Ait., non Desf.) 



Jasminace.^. 

 29. Olea Europeea, L. var. 



Maderensis: foliis lineari-oblongis, angustis, mucronatis, integerrimis, 

 utrinque subconcoloribus s. inferne nudiusculis: drupis subglobosis, 

 purpurascentibus, demum nigris. 



Hab. in rupibus apricis Maderse, prffisertim maritimis. 



Specimen in Herbario Banksiano, a cl. Masson olim lectum, sub 

 nomine O. EuropcE(B a cl. R. Brown in " Von Buch's Catalogue," 

 O. glabella Herb. Banks. (O. exasperattp Jacq. Hort. Schoenbr. iii. t. 1.) 

 " valde simile " dicitur. Panicula vero terminali, ramisque tuberculatis 

 hajc satis difFere videtur. 



Drupes about the size and shape of a small marble, half an inch in 

 diameter, of a deep shining black, by no means constantly " crowned 

 with the persistent style." Skin and flesh very thin and dry, rather 

 bitter to the taste. Stone very large. 



In drying, the plant gives out abundantly a whitish, powdery, gran- 

 ulated, sweetish substance (Manna?); resembling fine powder-sugar. 



