^ 9 $ 
DETERMINATIONS OF THE 
was the same as Anderson^s, which has just been mentioned. It has 
given me the greatest trouble to find means of identifying the plant ; 
but I observe how largely Roxburgh relied on Alton^s Hortus Kewensis 
for his names; and I find in that work, ii, (1789), p. 153, a 
Cactus Fious-indica called the White-spined Indian Fig/' 
Roxburgh has left a drawing of a white-spined Opuntia with a 
sulphur-yellow flower lined outside with red, and with a blood red 
fruit. Voigt, who from the records of the Calcutta Botanic Garden 
compiled his Hortus Suburbanus Calcutteyisis (published posthumously 
in i84?5), says, p. 63, that Opuntia Ficus-iudica " had a large 
sulphur flower produced in the rainy season. It is quite .possible that 
this was Roxburgh's Cactyis Ficus-indica, The drawing does not 
represent a plant which otherwise I know. Roxburgh, as noted on 
p. *297, received his plant from William Hamilton, and not from 
Anderson. 
iH the two Tunas of Roxburgh’s Catalogue, Tuna elatior was 
probably Opuntia elatior : — For the determination of the other species 
of Opuntia that Roxburgh and Anderson grew, the evidence is very un- 
satisfactory* Three names remain in Roxburgh's catalogue, viz,, Cactus 
Opmiia^ Cactus Tuna major, and Cactus Tuna elatior ; and one further 
specimen was preserved by Rottler from Anderson's garden, with the 
label Cactus Tuna. Ex horto Andersoniano. April 19, 1809." 
It is evident that Roxburgh intended by the names Cactus Tuna 
major and Cactus Tuna elatior to indicate that ho identified his two 
plants with the Cactus Tuna, a* Tuna major, and Tuna elatior, of 
Alton's Hortus Kewensis, (1789), p. 154?, i.e., with two of Dillen's 
species. As a matter of fact Dillen's full names [Hortus Mthamensis, 
pp. 395 — 398) were three, viz .: — 
Fig. 382, Tuna major, spinis validis flavicantibus, fiore sulphureo. 
Fig. 380. Tuna major, spinis validis flavicantibus, flore gilvo. 
Fig. 379, Tuna elatior, spinis validis nlgricantibus. 
The three names indicated as many different plants, which were 
cultivated in Sherrard's garden at.Eltham in Kent, between 1724) and 
1732, i.e., sixty-five to eighty years before Roxburgh and Anderson 
were experimentally growing Opuntias in India. But Alton put the two 
first together as Cactus Tuna major. 
Regarding Cactus Tuna elatior, it is to be noted that Anderson sent 
the plant to Roxburgh which Roxburgh so named, and that he did not 
send it until 1801. I know of no evidence whence he got it : and I 
