English

Abstract

Thompson, Joy & Johnson, L. A. S. (National Herbarium of New South Wales, Royal Botanic Gardens, Sydney, Australia 2000) 1986. Callitris glaucophylla, Australia's 'White Cypress Pine' a new name for an old species. Telopea 2(6): 731-736 The widespread conifer of temperate Australia, 'White Cypress Pine', is distinguished from related species and named Callitris glaucophylla. The species widely known as 'White Cypress Pine' appears to lack a 'correct' botanical name. All the names it has carried through its extensive literature are either not legitimate under the International Code of Botanical Nomenclature, or are legally the property of other species. The correct disposition, under the Code, of Callitris hugelii (Carriere) Franco (1952) was questioned by Blake (1959) and remains in doubt. Relevant literature has been covered in the publications of Garden (1957), Blake (1959) and Thompson (1961). Carriere's concept contains more than one element. In spite of the obvious Western Australian content indicated by the protologue and the name 'F. de Hugel', Franco suggested that a specimen, Moreton Bay, N(ew) H(olland), Leichhardt, 1854 (P, photo NSW), was part of Carriere's original concept. As Blake indicated, it is quite probably not so, and the chief element in that concept was certainly a plant (or plants) cultivated in Paris of which there is no herbarium specimen. The rather fragmentary Leichhardt specimen was seen by Blake who identified it as the coastal C. columellaris s. str. Although in 1854 (given as the date of collection in a hand other than Leichhardt's) Leichhardt was in inland Queensland well away from the habitat' of that species, Blake mentioned several features that are generally diagnostic of C. columellaris s. str. Uncertainty as to the relevance of this specimen to the protologue regardless of its identity renders it an unsuitable lectotype. We therefore regard the name Frenela hugelii as a name of uncertain application. Both of us have observed for many years the three taxa that were united by Blake under C. columellaris, and we continue to hold the opinion expressed by Thompson (1961), that they are distinct species. As we feel sure that others share this opinion and treat the taxon in the broad sense only because there is no name that they can apply with confidence to the most widespread and economically important component, we are naming it here as a new species. Callitris gJaucopbylla Thompson & Johnson, sp. nov. Arbor vel frutex magnus cortice non nigrescente modice rugoso sed fissuris non profundis, ramis plerumque patentibus, ramulis assimilatoribus plerumque glaucis nunquam densissimus atrovirentibusque, foliis 1-3 mm longis dorsaliter rotundatis, strobilis solitariis non persistentibus, squamis tenuis paene ad basin separantibus. 50417-2312-11 Volume 2(6): 731–736 Publication Date: 24 April 1986 dx.doi.org/10.7751/telopea19864610 TELOPEA Journal of Plant Systematics Til. Ro)'al BOTANIC GARDENS 6 DOPII(liPi Tmst plantnet.rbgsyd.nsw.gov.au/Telopea • escholarship.usyd.edu.au/journals/index.php/TEL· ISSN 0312-9764 (Print) • ISSN 2200-4025 (Online)