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CPIE Notebook Project - Grasses and Sedges of Hawai‘i Sedge Key – Page 36
Key to Genus Machaerina Vahl.

Sedges in the Genus Machaerina are large bunchy sedges with numerous strap-shaped leaves and a conspicuous redish-brown inflorescence. These sedges are found only above 500 ft elevation (above 1000 ft for the more common, M. angustfolia) on all the main Hawaiian Islands. On Guam, the genus is represented by a single native species growing in thickets of trees and shrubs in the southern hills.

[GENUS MACHAERINA]

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40a (21) Inflorescence of Machaerina abgustifolia Inflorescence an extensively branched panicle over 1 ft long, the floral bracts shorter than the inflorescence. Spikelets in clusters, each spikelet 7-8 mm (0.3 in) long. { Large sedge with numerous basal leaves found in wet areas (and wet forests) above 1000 ft (420 m). ‘uki. [HAW - END]
    Machaerina angustifolia (Gaud.) T. Koyama

Figure 36A. ‘uki – Partial view (upper half) of Machaerina angustfolia inflorescence.
40b

Inflorescence a large panicle (about 1 ft long) with some bracts longer than the inflorescence. Spikelets in clusters, each spikelet 3-5 mm (0.2 in) long. { Moderately large sedge with numerous basal leaves found in mesic to wet forests (in Hawai‘i, above 500 ft [150 m]). ‘ahaniu. [HAW - IND/END ssp] [GUM - IND]

    Machaerina mariscoides (Gaud.) J. Kern
    Machaerina mariscoides meyenii (Kunth) T. Koyama

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