Notes on important algal herbaria, III

Abstract

Summaries of the history and present whereabouts of a number of important algal herbaria have been given in two previous papers of this series (Dixon, 1959(Dixon, , 1960)).The present paper is concerned with the algal collections of John Stackhouse, about which extremely little has been published at the present time.The data relating to the Stackhouse collections are somewhat confused.According to Dickinson (1952) there are some specimens in the herbarium of the Royal Botanic Gardens, Kew, obtained through the Goodenough and Hooker collections, whilst the Stackhouse herbarium is said to be at the British Museum (Natural History), whereas Newton (1952), in her list of the herbaria at the latter institution makes no mention of the Stackhouse collections whatsoever.Subsequently, Koster (1954) stated that the collections were at the Linnean Society, London, whilst in a second publication (Koster, 1957) the collections were said to be divided between the British Museum, Kew, and the Linnean Society.A search for relevant specimens was therefore instituted.It appeared possible that the specimens on which the plates, and hence some of the descriptions, were based, might not have been preserved, as Stackhouse (1801) states, on the title page to the final fascicle of his ' Nereis Britannica ', that the plates were " coloured from nature ".A similar situation occurred with the Ellis herbarium (Dixon, 1960), but as Stackhouse (1800) does give elsewhere one of the earliest detailed accounts of the preparation of algal herbarium specimens this suggestion can probably be discounted.The three institutions mentioned above were first investigated and the following results obtained.

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