Lannean Society. 367 
gens,” in the Botanic Garden at Birmingham, agrees exactly in ap- 
pearance with Lehmann’s plate of HL. Altensteinii, in his ‘ Pugillus 
Sextus’ (Hamburg, 1834). The history of two of these plants 
called ‘‘ Zamia pungens”’ is remarkable. They are a male and a 
female, of about equal size and similar appearance, and formerly 
belonged to Lord Tankerville’s collection at Walton-on-Thames. 
When they were sold, the male plant went to Kew, the female to 
Chatsworth. Both have flowered, and the flower of each has been 
represented. An engraving of the female with its cone, produced 
in 1832, was published by A. B. Lambert, Esq. (see Buckland’s 
‘Bridgewater Treatise,’ i. 494; i. plate 59), and Mr. R. Hors- 
man Solly obtained a fine drawing of the flower of the male in 
1839 (Proceedings of Linn. Soc. p. 52; Annals of Nat. Hist. v. 46). 
This male cone is preserved in the collection of the Linnean So- 
ciety, and a cone afterwards produced by the same plant is in the 
museum at Kew. ‘This plant is now putting up a new crown of 
leaves. Its fellow, the female at Chatsworth, has been in fruit many 
months *. 
* Of the cones of this plant and of the female hereafter mentioned of 
Enc. horridus, Mr. Robert Scott of Chatsworth has furnished the following 
measurements and observations taken at two different periods of their 
growth. Thecone of Enc. pungens appeared on the 14th of June, and that 
of Enc. horridus on the 13th of July 1848. ‘The measurements of October 
were coincident with the perfect disengagement of the cones ; and although 
Mr. Scott has made repeated measurements since those taken in December, 
he does not find, up to the 9th of March (the date of his communication), 
any further increase of size. They were then full-grown, and the scales 
appeared likely to drop from the axis in a few weeks. 
ENCEPHALARTUS PUNGENS. 
Oct. 9, 1848. Dec. 25, 1848. 
Length of cone, outside measure......... 18} inches ............. 2] inches 
Circumference, 9 in. from top....... pddog, G28) m= uddanGOnODID, e418) —_ 
Circumference, 3 in. from base ......... 33 ==) sctesssiitene: (One — 
Nf ber OR EPIL OS sa wstnakalseidelee acteeptsejsjosigaeh LO 
Number of fertile scales in one spire ... 14 or 15 
Number of barren scales in one spire... 8 or 9 
Perpend. diameter of a fertile-scale...... 14 inch ......:..0.. I>  — 
Transverse diameter of a fertile scale... 2 — Soe ee a 
Perpend. diameter of a barren scale ... O72, ——  ccsceeseeeee 0% — 
Transverse diameter of a barren scale... Ij — ...c0...08. 1445 — 
Each spire performs one revolution. 
ENCEPHALARTUS HORRIDUS, 
Oct. 9, 1848. Dec. 25, 1848. 
Length, outside measure ...,.......sss00.- NOMinches) wescsesseere 14 inches 
Circumference at base ...... easecerdtecssyc; UE a ok  sentsesera mmm 
Circuinference, 3 inches from top ...... De ON ceseceseose, a lon A 
Number of spires ..... su0pocqnoquadBondeT se0, ts 
Number of scales in one spire ,............ 14 
Perpend. diameter of one scale ......... 17 SS yetie ees Ae 13, — 
Transverse diameter of one scale ...... Ly cee ee eee £) Vi = 
Each spire performs one revolution. 
There are no apparently barren scales. 
