Astelia subg. Collospermum (Skottsb.) Birch 2015

Birch, Joanne L., 2015, A revision of infrageneric classification in Astelia Banks & Sol. ex R. Br. (Asteliaceae), PhytoKeys 52, pp. 105-132 : 111

publication ID

https://dx.doi.org/10.3897/phytokeys.52.4768

persistent identifier

https://treatment.plazi.org/id/2B746D4C-4C7E-5DB1-B196-7581553B62DC

treatment provided by

PhytoKeys by Pensoft

scientific name

Astelia subg. Collospermum (Skottsb.) Birch
status

stat. nov.

Astelia subg. Collospermum (Skottsb.) Birch stat. nov.

Basionym: Collospermum Skottsb., Kongl. Svenska Vetensk. Acad. Handl. Ser. 3, 14(2): 72. 1934. Type: Collospermum hastatum (Colenso) Skottsb. [Lectotypified by Moore and Edgar (1976)].

Note.

Open growth form; leaves linear or ensiform with dark coloration at base and peltate branched hairs; inflorescences bearing many flowers; flowers with a long perianth tube (1.3-3.1 mm); staminate flowers with long filaments (3.8-8.6 mm), anthers basifixed, immobile; pistillate flowers with long outer tepals (1.5-6.2 × 0.9-1.6 mm); ovary trilocular, intermediate length (2.1-4.8 mm); fruit globose or obpyriform, with few to many seeds per fruit (1-22); seeds ellipsoid or ovoid, small and narrow (1.3-2.1 × 0.1-1.1 mm); funicle short, truncate, with well-developed mucilaginous funicular hairs that adhere to the seed.

Remarks.

Species published under Collospermum must be transferred as Astelia has nomenclatural priority. Synapomorphies recognized for the genus Collospermum ( Skottsberg 1934) remain valid for Astelia subg. Collospermum .

Included species and distribution.

New Zealand: Astelia hastata Colenso, Astelia microsperma Colenso pro parte. Republic of Fiji, Viti Levu, Vanua Levu, Kandavu; Republic of Vanuatu, Espiritu Santo, Tanna, Aneityum: Astelia montana Seem. Independent State of Samoa, Savai’i, Upolu: Astelia samoense (Skottsb.) Birch.

Habitat.

Lowland temperate forest ( Astelia hastata and Astelia microsperma ) and montane tropical cloud forest ( Astelia montana and Astelia samoense ).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Asparagales

Family

Asteliaceae

Genus

Astelia

Loc

Astelia subg. Collospermum (Skottsb.) Birch

Birch, Joanne L. 2015
2015
Loc

Basionym: Collospermum

Birch 2015
2015
Loc

Collospermum hastatum

Birch 2015
2015