Luzula hawaiiensis var. glabrata

(Hillebr.) O.Deg. & I.Deg. (1957)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Juncaceae Genus: Luzula

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Description

Key Characters:

Growth Form: Strongly to weakly cespitose perennial herbs.

Stems: Stems erect, inconspicuously striate, 0.8–70 dm long.

Roots: Fibrous root system.

Leaves: Leaves simple. Primarily basal, 1–2(3) per stem. Blades linear, 5–30 cm long, 1–10 mm wide. Apex mucronate. Margins densely pubescent, especially when young, often glabrate with age. Petioles absent. Stipules absent.

Flowers: Flowers (2)3–8(–10) in subglobose glomerules subtended by papery or scarious bracts, forming cymose, terminal inflorescences, sometimes with a smaller, lateral inflorescence at the next lower node in the axil of a single foliar bract 4–15 cm long, bracts subtending inflorescence 1–4, foliaceous, 2–10 cm long, shorter than, equaling, or slightly longer than inflorescence, each flower subtended by 2–3(4) acuminate bracteoles with laciniate to subentire margins. Flowers bisexual (perfect). Perianth parts pale yellowish brown to dark brown, linear, subulate, margins narrow, hyaline, outer ones 2.5–4.5 mm long, inner ones 2–3.5 mm long; stamens shorter than perianth. Stamens 6; anthers equaling or longer than filaments. Pollen grains remaining in tetrads, surrounded by a common exine. Ovary superior, sessile, 1-celled, placentation basal; ovules 3, anatropous; styles about as long as ovary.

Fruit: Capsules pale brown to reddish brown; glossy; trigonous; oblong or ovoid; shorter than perianth. Seeds red to dark brown; ellipsoid to ovoid; 1–2 mm long; surfaces rugulose; often with white micropylar caruncle and conical protuberance at apex.

Ploidy: 2n = 14*; 24* (H); 16* (O); 38*; 42* (K)

Habitat: Occurring in open or rocky sites; slopes; cliffs; and ridges; and open areas in mesic forest and shrubland; also in subalpine forest; shrubland; and grassland.

Elevation Range: 730–2,560 m.

Historical Distribution

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Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Endemic
Molokai Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: O.Degener, Fl. Hawaiiensis: 5, index (1957)

Other References

Wagner et al. 1990:1455 (K, Mo, M)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Luzula hawaiiensis var. glabrata below Kamoku Preserved_Specimen Rock, J.F.C. 6147 Molokai BISH 1910-03-01
2 Luzula hawaiiensis var. glabrata Kokee State Park at mile 18.4 along Hwy 550. In Kalalau Valley on steep, ohia dominated slope With Luzula hawaiiensis var. hawaiiensis. Preserved_Specimen Flynn, T.W. 2102 Kauai BISH 1987-03-20
3 Luzula hawaiiensis var. glabrata S of Kaulahuki Preserved_Specimen Degener, O. 17579 Molokai BISH 1928-04-11
4 Luzula hawaiiensis var. glabrata Molokai Preserved_Specimen Degener, O. 10309 Molokai BISH 1928-01-01
5 Luzula hawaiiensis var. glabrata Kamiloloa Preserved_Specimen Swezey, O.H. 204 Molokai BISH 1926-12-20
6 Luzula hawaiiensis var. glabrata S Haleakala, Puu Pane with Dodonaea Preserved_Specimen leaves not stiff, dark green Forbes, C.N. 1837 Maui BISH 1920-03-04
7 Luzula hawaiiensis var. glabrata below Kamoku Dry district Preserved_Specimen Rock, J.F.C. Molokai BISH
8 Luzula hawaiiensis var. glabrata S Haleakala, Puu Pane with Dodonaea Preserved_Specimen leaves not stiff, dark green Forbes, C.N. 1837 Maui BISH 1920-03-04
9 Luzula hawaiiensis var. glabrata West Maui, Lihau, North side of summit region. Aspect W. Wet Mesice forest: Metrosideros, Cheirodendron, Coprosma, Vaccinium, Sadleria, Clermontia, Stenogyne, Pipturus, Asplenium Preserved_Specimen Mat forming, some clusters >1 m across, small and thin plants Pezzillo, Z. 1266 Maui BISH 2025-08-24
10 Luzula hawaiiensis var. glabrata Kuia N.A.R.; Nuololo Valley; Below transect end and down valley within gulch area Acacia, Metrosideros, Montane Mesic, Summer Dry Forest with Tetraplasandra, Dodonaea, Hedyotis, Lysimachia, Stenogyne, Myrsine, Bobea, Psychotria, Scaevola, Zanthoxylum, Pleomele, Alphitonia. Degraded by Goats, Deer, Pigs, Rubus, Passiflora, Hedychium. Preserved_Specimen Wood, K.R. 1070 Kauai BISH 1991-07-15
11 Luzula hawaiiensis var. glabrata Waimea District Below Kaluahaula Ridge, above Kawaiiiki Valley, below trail about 30ft. and West of the Diellia erecta fence. Diverse Mesic Forest Metrosideros - Acacia koa canopy, with Comprosma, Dodonea, and Dubautia, Kadua affinis, in midstory, ground w/ 60% moss, and 20% Dianella, rest Schidea viscosa, Doodia and open soil/leaf litter. Preserved_Specimen Leaves tufted at base. Peduncle upright green. Nuttlets red-brown. Hairs on underside of leaves and at base. Tangalin, N. 3102 Kauai BISH 2012-04-13
12 Luzula hawaiiensis var. glabrata S of Kaulahuki Among scrub vegetation. Preserved_Specimen Degener, O. 10307 Molokai BISH 1928-04-11
13 Luzula hawaiiensis var. glabrata At end of jeep road, near Kawela intake. Roadside. Kawela Uka In shade of Metrosideros and Cheirodendron. Preserved_Specimen Nagata, K.M. 1256 Molokai BISH 1975-03-29
14 Luzula hawaiiensis var. glabrata Papaala Pali, west of Kaunuohua Growing on edge of pali. Associated with Plantago, Astelia, Lycopodium cernuum, Selaginella deflexa and Deschampsia. Preserved_Specimen Form dense mats. Leaves reddish, flowers white. Davis, J. 765 Molokai BISH 1982-05-20
15 Luzula hawaiiensis var. glabrata W of Puu Kolekole. Near jeep trail Frequent with Psilotum spp. in scrub of Dodonaea, Styphelia, Metrosideros, & Dubautia. Preserved_Specimen Davis, J. 770 Molokai BISH 1982-05-21
16 Luzula hawaiiensis var. glabrata Olowalu Valley, L ridge edge of pali Preserved_Specimen Forbes, C.N. 2295 Maui BISH 1920-03-10
17 Luzula hawaiiensis var. glabrata East Maui, Kipahulu Forest Reserve, Healani with Deschampsia, Metrosideros, Styphelia Preserved_Specimen Higashino, P.K. 2642 Maui BISH 1976-06-17
18 Luzula hawaiiensis var. glabrata below Kamoku Preserved_Specimen Rock, J.F.C. 6147 Molokai BISH 1910-03-01
19 Luzula hawaiiensis var. glabrata S Haleakala, Puu Pane with Dodonaea Preserved_Specimen leaves not stiff, dark green Forbes, C.N. 1837 Maui BISH 1920-03-04
20 Luzula hawaiiensis var. glabrata East Maui, Kipahulu Forest Reserve, Healani with Sadleria, Acacia, Dodonaea, Styphelia Preserved_Specimen Higashino, P.K. 2679 Maui BISH 1976-06-17
21 Luzula hawaiiensis var. glabrata Papaala Pali, west of Kaunuohua Growing on edge of pali. Associated with Plantago, Astelia, Lycopodium cernuum, Selaginella deflexa and Deschampsia. Preserved_Specimen Growing in dense mats. Leaves reddish, flowers white. Davis, J. 765 Molokai BISH 1982-05-20
22 Luzula hawaiiensis var. glabrata Puu o Kaeha Wet woods Preserved_Specimen St.John, H. 12506 Molokai BISH 1932-12-23
23 Luzula hawaiiensis var. glabrata Waiakuilani gulch Metrosideros, Leptecophylla, Lipochaeta rockii, Osteomeles anthyllidifolia, Nestegis sandwicensis, Spermolepis hawaiiensis, Nesoluma polynesicum, Pouteria sandwicensis, Coprosma foliosa, Melinis minutiflora, Anthoxanthum, Ageratina riparia Preserved_Specimen flowers Perlman, S. 20428 Molokai BISH 2007-06-07
24 Luzula hawaiiensis var. glabrata Kawela Gulch, Kawela Moist open ridge Preserved_Specimen St.John, H. 19915 Molokai BISH 1938-12-30
25 Luzula hawaiiensis var. glabrata Pelekunu Valley, TNC Preserve survey, transect 10, from Pepeopae to Kaunuohua, along Papaala Pali In Metrosideros polymorpha montane wet forest with Athyrium sandwichianum, Cyrtandra, Broussaisia, Cibotium, Clermontia, Cyanea, Eurya, Hedyotis terminalis, Ilex, Melicope, Plantago, Labordia, Stenogyne, Wikstroemia, many ferns Preserved_Specimen Perlman, S. 10410 Molokai BISH 1989-03-31
26 Luzula hawaiiensis var. glabrata Waikolu Valley Weedy, foggy, bare ledge. Preserved_Specimen Degener, O. 27257 Molokai BISH 1960-01-15
27 Luzula hawaiiensis var. glabrata W Maui, Lahaina District, Lihau Lowland Mixed Mesic Shrubland at 3450 ft on a ridge between tussocks of Metrosideros, Dodonaea, Styphelia, Sadleria, Dicranopteris, Sphenomeris, Lysimachia, Vaccinium, Machaerina and Gahnia Preserved_Specimen Welton, P. 1307 Maui BISH 1991-08-28
28 Luzula hawaiiensis var. glabrata Kahikinui Forest Reserve cliff, with Deschampsia Preserved_Specimen Higashino, P.K. 1208 Maui BISH 1975-12-28
29 Luzula hawaiiensis var. glabrata Puu o Kaeha, Kawela Wet woods Preserved_Specimen St.John, H. 12506 Molokai BISH 1932-12-23
30 Luzula hawaiiensis var. glabrata W Maui, Lahaina District, Lihau Lowland Mesic Shrubland at 3200 ft on a sunny west facing exposed ridge near a dwarfed koa forest Preserved_Specimen Welton, P. 1112 Maui BISH 1991-07-13
31 Luzula hawaiiensis var. glabrata East Maui, Koolau Forest Reserve ridge, with Carex alligata and Dryopteris Preserved_Specimen Harrison, B. 382 Maui BISH 1973-07-29