Journal Number 98
February 2006


ELEMENTARY ED HATCH

Nematoceras 1
Drawings by Bruce Irwin and Ian St George


Nematoceras
(thread / horn - the long slender sepals and petals)

Dese mats sometimes a metre across.
They share with Corybas and Chiloglottis, a tall peduncle which enables the seed to be spread over a wide area.
One of the characteristics of these mats is the large number of barren plants compared with the few that flower and seed.

     

Nematoceras acuminata

 

Nematoceras acuminata
(the acuminate shape of the mature leaf)

A very distinct species, it has in its mature stage, an acuminate leaf with reddish veining on the under side, very long, filiform lateral sepals and petals, and a long filiform cauda to the dorsal sepal. Leaves of young plants lack the reddish markings, are reniform or broadly cordate, and have an apiculate tip which points the relationship to the round leaved species.

Distribution: endemic - North, South, Stewart and Auckland Is.

Flowers: September-December - insect pollinated.

     

Nematoceras hypogaea

 

Nematoceras hypogaea
(underground, the flower buried in the moss and litter)

The trilobate leaf is above the flower - cf macrantha.

Distribution: endemic - North Id: Nothofagus forest in the East Cape district.

Flowers: September-October - insect pollinated.

     
Nematoceras iridescens  

Nematoceras iridescens
(the iridescent labellum, particularly when wet)

The general structure of the plant is similar to that of N.rivularis s.l. q.v.

Distribution: endemic - North Id: inland Taranaki and Wanganui.

Flowers: August-October - insect pollinated.

     
Nematoceras longipetala  

Nematoceras longipetala
(the long petals - which are as long as the sepals)

cf N.rivularis s.l. q.v.

Distribution: endemic - North Id. Volcanic Plateau.

Flowers: September - insect pollinated.

     

 

 

 

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