346 BOTANY OF THE VOYAGE OF H.M.S. HERALD. 
240. MamillariAj sp. Fm- 19 read 239. 
259. EcnixoCACTus Wislizenii, Engelm.j supra, p. 290. 
" It has been mentioned as something remarkable that one of M. Ehrenberg's Ecltinocacti had upwards 
of 2000 spines. By counting first the numlbcr of spines, then that of the bundles of eaeli rib, and ulti- 
mately that of the ribs of every individual, I arrived at the following result : — An Echinocactus Wtslizenii, 
Engelm., in the possession of Frederic Scheer, Esq., was found to have 8360 spines, and the E. Vlsnaga, 
Hook. {E, platyceras, Lem.), in the Boyal Gardens, 17,600. There was formerly at Kew a specimen of the 
latter, which waa at least three times larger than the present, and which cannot have had leas than 51,000. 
Those Cacti, whose bundles consist of a greater number of spines, present results still more surprising. 
The tallest {Piloeereiis senilis, Lem.), at Kew, having thirty in each bundle, has a total number of 72,000 ; 
yet those plants, giants as they appear in European conservatories, are but pigmies amongst their kindred 
at home. And if these small specimens have such a number, how many may a full-grown plant possess ! 
and how great may be the number of spines produced in Mexico, a country where a man may travel for 
tiays without seeing any other vegetation save vast groves of Cactuses !"— Seem, in Hook. Journ. and Kew 
Misc. vol. iv. p. 123. 
287. Cereus? vel Echinocactcs? For (21) read (286). 
COKNE^. 
Con:iv^ grandis, Schlecht. et Cham., Linnaea, vol. v. p. 171. Sierra Madrc, on the road from 
Durango to Topic. 
HAMAMELIDE^. 
Liquidamcar stijraciflua, Linn. Acapulco (Lay and Collie !). 
The Hookeriau Herbarium contains specimens from Jalapa (Linden, n. 1036 ! Galeotti !), Lexington, 
Kentucky (Short!), New York (Torrey!), New Orleans (Drummond, n. 321!), Louisiana (TanitunTer !), 
and Marauon (Warszewicz!). 
COMPOSITE. 
404. Trixis obvallata, Hook, et Ara. Cerro de Piual (n. 1477) . 
OLEACE^*. 
1 
Fraxinus dipetala, Hook, et Arn.— De Cand. Prodr. vol. viii. p. 275. Chihuahua (Potts !, who 
sent seeds raised by Mr. Scheer in his garden at Northflcct, Kent) . 
PIPERACE^. 
Enkea decrescens, Miquel, in Hook. Journ. Bot. vol. iv. p. 40. Hacienda dc Naranjas, feet of 
the Cerro de Pinal ; Central America (Barclay !), 
