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Adiantum viridescens Colenso

Scientific name record
Names_Plants record source
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Threat status: Not threatened

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Colenso
Colenso
1895
400
ICN
Adiantum viridescens Colenso
species
Adiantum viridescens
Lectotype (selected by Parris & Croxall 1974): New Zealand, presented by W. Colenso, 1897, K 001090067!

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viridescens

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Adiantum viridescens Colenso

Rhizome rather slender to stout, far-creeping; paleae dark brown, not very glossy, hardly denticulate, to 4 mm long; stipites distributed along rhizome. Stipes rather stout, red-brown to purple-brown, 13-36 cm long, clad in long to very long hairs, mainly in groove, but some on stipe generally, paleate in lower portion. Rachis similar, flexuous, clad in long curved to flexuous red-brown hairs, mainly in the groove, as are secondary rachises and costae. Lamina ovate-deltoid to deltoid, 2-3 pinnate, 11-31 × 7-33 cm, olive green, glabrous above and below. Primary pinnae 1-4 pairs, to 16 × 13 cm, alternate, distant, deltoid, with 2-4 lateral pinnae and a terminal pinna. Secondary pinnae rather distant, to 9 × 2.5 cm. Pinnules up to 1.9 × 0.5 cm, shortly stalked, dimidiate, oblong to narrow oblong, lower margin entire, upper margin lobed, incisions usually reaching below the sorus, up to ^ of pinna depth. Sporangia in sinuses of shallow lobes, on upper and outer pinna margins, protected by reniform reflexed marginal indusium; up to 10 groups to each pinna.

Adiantum viridescens Colenso

Rhizomes far-creeping, scaly. Stipes and rachises stiffly hairy. Laminae ovate or broadly ovate, 15-35 × 10-25 cm, (2)-3-pinnate. Primary pinnae alternate, 2-5 on each side of rachis bearing secondary pinnae, and a terminal portion with 10-18 undivided primary pinnae on each side. Ultimate pinnules ± oblong or parallelogrammoid, often curved acroscopically at the apices, 6-25 × 3-8 mm; stalk attached at proximal corner; upper and outer margins deeply lobed, lower and inner margins entire; both surfaces glabrous, dark green. Indusia ± reniform with prominent sinuses, glabrous, up to 14 per pinnule on upper and outer margins, sometimes extending to apical part of lower margin.

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Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso
Adiantum viridescens Colenso

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Adiantum viridescens Colenso
[Not available]

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typification
Lectotype (selected by Parris & Croxall 1974): New Zealand, presented by W. Colenso, 1897, K 001090067!

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8bf0ad2a-b45d-495e-b001-ef33d41b7129
scientific name
Names_Plants
1 January 2000
17 September 2019
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