Machaerina (twigrush) is a genus of flowering plants in the sedge family. Its species occur in tropical America, the West Indies, Malesia, Australia and the Pacific region. The name comes from the Greek machaira (a large knife), alluding to the shape of the leaves in the type species – Machaerina restioides.
Description The species in the genus are rhizomatous perennials. The leaves are mainly basal, with a few cauline, laterally compressed, distichous and equitant at base. The culms are tufted and pithy. The inflorescence consists of several partial panicles. The flowers may be bisexual or male.
Species 52 species are accepted.
Machaerina abbreviata Machaerina acuta (Labill.) J.Kern Machaerina anceps (Poir.) Bojer Machaerina angustifolia (Gaudich.) T.Koyama Machaerina arthrophylla (Nees) T.Koyama Machaerina articulata (R.Br.) T.Koyama Machaerina ascendens Machaerina aspericaulis (Kük.) T.Koyama Machaerina austrobrasiliensis M.T.Strong Machaerina ayangannensis M.T.Strong Machaerina bidwellii (Stapf ex Setch.) T.Koyama Machaerina complanata (Berggr.) T.Koyama Machaerina cubensis (Kük.) T.Koyama Machaerina deplanchei (Boeckeler) T.Koyama Machaerina disticha (C.B.Clarke) T.Koyama Machaerina effusa Machaerina ekmanii (Kük.) T.Koyama Machaerina ensifolia (Boeckeler) T.Koyama Machaerina ensigera (Hance) T.Koyama Machaerina falcata (Nees) T.Koyama Machaerina ficticia (Hemsl.) T.Koyama Machaerina filifolia Griseb. Machaerina flexuosa (Boeckeler) J.Kern Machaerina glomerata (Gaudich.) T.Koyama Machaerina gunnii (Hook.f.) J.Kern Machaerina huttonii (Kirk) T.Koyama Machaerina insularis (Benth.) T.Koyama Machaerina iridifolia (Bory) T.Koyama Machaerina johnsonii Machaerina juncea (R.Br.) T.Koyama Machaerina lamii (Kük.) J.Kern Machaerina laxa (Nees) T.Koyama Machaerina maingayi (C.B.Clarke) T.Koyama Machaerina mariscoides (Gaudich.) J.Kern Machaerina milnei (C.B.Clarke) T.Koyama Machaerina montana (J.Raynal) Lye Machaerina monticola (Guillaumin) T.Koyama Machaerina muelleri (C.B.Clarke) T.Koyama Machaerina myriantha (Chun & F.C.How) Y.C.Tang Machaerina nukuhivensis (F.Br.) T.Koyama Machaerina planifolia Machaerina preissii (Nees) L.A.S.Johnson & Koyama Machaerina raiateensis (J.W.Moore) S.L.Welsh Machaerina restioides (Sw.) Vahl Machaerina rubiginosa (Spreng.) T.Koyama Machaerina scirpoidea (Steud.) T.Koyama Machaerina sinclairii (Hook.f.) T.Koyama Machaerina tenax (Hook.f.) T.Koyama Machaerina teretifolia (R.Br.) T.Koyama Machaerina tetragona (Labill.) T.Koyama Machaerina vaginalis (Benth.) T.Koyama Machaerina veillonis
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