220 JACK'S LETTERS TO WALLICH, 1819-1821. 



I find Roxburgh's Murraya sumatrana is nothing more than 

 Lonreiro's Chalcas pjaniculata, Rumphius's Oamunium, 24 * un- 

 justly degraded from the rank of a species and confounded with 

 Murraya exotica : I mean to restore it as M. paniculata, a bad 

 name by the bye, because not panicled. I think you would do 

 well to alter Roxburgh's Camunium, which is improperly applied. 

 The Murraya is the true Canmniiim (I find it is Aglaia of 

 Loureiro, so pray adopt that name, which is good. I mean to do 

 so in the present number of my descriptions). 



What is Roxburgh's Petaloma in reality, it has nothing to do 

 with Petaloma, and I suspect it of being congener of a coccineous 

 Combretaceae which I was thinking of calling Pyrrhanthus. 250 An 

 affinis Lagunciilariae, Gsertn. ? 



Pray is Avicennia resinifera, distinct from A. tomentosa. 231 

 The former is perhaps Rumph.'s Mangium album which I have here, 

 and is a good figure. I do not precisely remember the Avicennia 

 of the Sunderbunds, but I think this is different. The fruit of 

 mine is much smaller, being less than an inch long. The leaves 

 are lanceolate, pointed, white but not tomentose below. 



My very best regards to Mrs. Wallich, and believe me always, 



Thine Affectionately, 



William Jack. 



P.S. The press has been more active than I expected, and 

 enables me to send you the 3 first sheets of my second paper, the 

 last are uncorrected proofs. They include all Pentandria and I 

 therefore withdraw 252 the MSS. of those that appear in it. Pray 

 give me what remarks occur to you. 



I think you have now all the Pens 2 "' 3 that I have made des- 

 criptions of. You have some which on that account I did not 

 take up myself, such as Posoqueria? anisophylla &c. 254 



Thine in haste, 



W. Jack. 



249. See note No. 148 p. 189. 



250. Yes; Jack is right. 



251. Jack evidently asks if the Avicennia resinifera described by 

 Forster, and the Avicennia tomentosa, ascribed by Eobert Brown in his 

 Prodromus Florae Novae Hollandiae to Jacquin, differ. Under Pyrrhanthus 

 in the Malayan Miscellanies, ii. (1822) No. 7, p. 57, he records the find- 

 ing in Sumatra of what he took to be the first. 



252. What Jack withdrew can only be ascertained from such proof 

 as he sent to Wallich if still preserved in the Eoyal Botanic Gardens, 

 Calcutta. 



253. Pentandria. The Pentandria of the Flora Indica were under 

 revision by Wallich at the time. 



254. Randia anisophylla. See note No. 174, on p. 196. 



Jour. Straits Branch 



