JDH sends this letter accompanying some specimens [not present] for his father, William Jackson Hooker. He discusses his monograph of Van Diemen's Land [Tasmania] plants, it is a revision of WJH's papers in the BOTANICAL JOURNAL & CURTIS'S BOTANICAL MAGAZINE[?] & needs the addition of Malvaceous plants from ICONES PLANTARUM & Brown's genus Stenopetalum from De Candolle. It is to be printed in the ANNALS & Mr Taylor will send copies for Sir John Franklin, Captain [James Clark] Ross etc. JDH expects the expedition to leave VDL for the ice in Oct 1840. Discusses the need to revise his description for the ICONES PLANTARUM. JDH's collection may be extensive enough to warrant adding new VDL genera to future volumes of the FLORA BOREALI AMERICANA. JDH is now considered the naturalist to the expedition though his nominal rank is as a medical officer [assistant surgeon].