Dicksonia Lanata Subsp. Hispida

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Dicksonia lanata subsp. hispida SYNONYMS Dicksonia lanata var. hispida Colenso FAMILY Dicksoniaceae AUTHORITY Dicksonia lanata subsp. hispida (Colenso) Perrie et Brownsey FLORA CATEGORY Vascular – Native ENDEMIC TAXON Yes ENDEMIC GENUS No ENDEMIC FAMILY Puketi forest, August. Photographer: John No Smith-Dodsworth STRUCTURAL CLASS Ferns CHROMOSOME NUMBER 2n = 130 CURRENT CONSERVATION STATUS 2018 | At Risk – Naturally Uncommon PREVIOUS CONSERVATION STATUSES 2012 | Not Threatened 2009 | Not Threatened 2004 | Not Threatened BRIEF DESCRIPTION Small tree fern with a short trunk and pale brown-stalked dark-green stiff leaves to 2m long inhabiting kauri forests. Trunk to 2m tall, sparsely covered by old leaves. Leaf stems covered in small hairs (lens needed). Sporangia in small capsules at the edge of fronds undersides. DISTRIBUTION Endemic. North Island, Te Paki south to the Bombay Hills and Tararu Valley, Coromandel Peninsula Puketi forest, August. Photographer: John Smith-Dodsworth HABITAT Virtually confined to kauri (Agathis australis) forest where it is often the characteristic understorey fern, growing with Astelia trinervia and Gahnia xanthocarpa. Also occurs in cloud forest in some of the western ranges of Northland SIMILAR TAXA Dicksonia lanata subsp. lanata from which it is most easily distinguished by the presence of a small trunk which may be up to 2 m tall. However, the fronds are also usually dark green rather than glaucous green. There are other minor cryptic characters which also separate the two varieties. FLOWERING Not applicable - spore producing FLOWER COLOURS No flowers FRUITING Not applicable - spore producing PROPAGATION TECHNIQUE Easy from spores. Can be grown from rooted pieces but rather slow. Prefers a deep, cool soil enriched with leaf litter. Slow to establish. ETYMOLOGY dicksonia: After James Dickson (1738-1822), British botanist and nuseryman lanata: Woolly hispida: Roughly hairy WHERE TO BUY Not commercially available NOTES ON TAXONOMY Dicksonia lanata subsp. hispida is probably worthy of species rank. In the upper Tararu Valley, Coromandel Peninsula both subspecies are virtually sympatric. MORE INFORMATION https://www.nzpcn.org.nz/flora/species/dicksonia-lanata-subsp-hispida/.

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