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Trimezia martinicensis

(Jacq.) Herb. (1844)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Asparagales Family: Iridaceae Genus: Trimezia

martinique trimezia, walking iris

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Description

Key Characters:

Growth Form: Plants up to 80 cm tall, with short rhizomes with fibrous tunics.

Stems: Flowering stems subterete, usually with a large cauline leaf in the middle part, 30–80 cm long, usually longer than leaves, unbranched or occasionally branched.

Roots: Fibrous root system.

Leaves: Leaves simple. Usually distichous, usually isobilateral and unifacial. Blades narrowly lanceolate, about as long as stems, 1–2 cm wide. Surfaces glabrous. Margins entire. Veins parallel. Sessile. Stipules absent.

Flowers: Flowers several in terminal clusters enclosed by spathe-like bracts, spathes herbaceous, up to 2 cm long. Flowers bisexual (perfect), actinomorphic. Tepals yellow with brownish markings, outer ones up to 2 cm long, spreading, inner ones with brownish purple spots at base and along middle, erect–ascending, up to 1.7 cm long. Stamens 3; filaments weak, to 5–6 mm long; anthers ca. 4 mm long, coherent to style branches. Ovary inferior, 3-carpellate, 3-celled, ca. 5 mm long; style ca. 9 mm long, crests vestigial.

Fruit: Capsules narrowly obovate; (1.2–)1.5–3 cm long. Seeds irregularly rounded to angular.

Ploidy: 2n = 40; 76; 80

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

  • Yes

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized

Dispersal Agents


Pollinators

Specimens

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Bibliography

Name Published In: Edwards's Bot. Reg. 30(Misc.): 88 (1844)

Other References

Wagner et al. 1990:1449 (O); Staples & Herbst 2005:672 (DESCR)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Trimezia martinicensis Honolulu, Dowsett Tract Preserved_Specimen Handy, E.S. Oahu BISH 1943-12-19
2 Trimezia martinicensis Palolo, Waimao Valley One small patch by trail in woods. Preserved_Specimen Weed, sepals deep yellow, but brown-spotted at middle bend. St.John, H. 26943 Oahu BISH 1980-02-17
3 Trimezia martinicensis Honolulu, 3179 Kaohinani Dr Volunteering in uncultivated field. Preserved_Specimen Leaves flat, w. 3-5 main veins, ca 18 in by 3/8 in, approximately 3 from 1 bulb, and 1 short leaf midway on slender, cylindrical flower stalk, which may become 18 in long. Fls 2 in long, open only at midday, ca 1 in diam, delicate, yellow w. light olive-brown on lower part of 3 large outer segments, 3 small segments also with 3 olive brown spots on last upper curve. Alot of info on label. Neal, M.C. Oahu BISH 1946-02-22
4 Trimezia martinicensis Schofield Barracks, East Range In a grassy opening surrounded by bamboo. Preserved_Specimen Kawelo, K. 16 Oahu BISH 2005-04-21
5 Trimezia martinicensis Honolulu, Nuuanu Valley, country club ridge Preserved_Specimen Herb w. yellow flowers. Kerr, M. 19634 Oahu BISH 1949-05-01
6 Trimezia martinicensis Palolo on central ridge. Ahupuaa of Waikiki. Growing on disturbed trail with Sporobolus, Dicranopteris linearis, Acacia koa, Metrosideros polymorpha, Paderia foetida, Psidium cattleianum, Ardisia elliptica, and others. Preserved_Specimen Thomas, M.K. 816 Oahu BISH 2024-10-12
7 Trimezia martinicensis Kaneohe, Koolaupoko distr., Keolu Hills. Behind Hawaiian Memorial Park. Not uncommon in sunny, moist sites in secondary forest. Associated with grasses, Bidens, Spathoglottis in exposed areas. Preserved_Specimen Nagata, K.M. 4002 Oahu BISH 1989-07-11
8 Trimezia martinicensis Lyon Arboretum, hodge podge area Preserved_Specimen Herb 50 cm ht, lvs 1 cm wide. Flowers yellow w. purplish-brown marking at center. Nagata, K.M. 3050 Oahu BISH 1984-08-30
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