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Pterolepis glomerata

(Rottb.) Miq. (1840)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Myrtales Family: Melastomataceae Genus: Pterolepis

false meadow beauty

Description

Key Characters:

Growth Form: Erect, suffrutescent herbs or subshrubs up to 0.5 m tall.

Stems: Young branches subquadrate, strigose.

Roots:

Leaves: Leaves simple. Opposite, decussate. Blades ovate to oblong–ovate or elliptic, 1.4–4.5 cm long, 0.6–1.6 cm wide. Apex acute. Base obtuse to rounded. Surfaces sparsely to moderately strigose. Margins entire or obscurely serrulate. 3-veined. Petioles 1–5 mm long. Stipules absent.

Flowers: Flowers usually 3–5(–10) in bracteate, terminal glomerules, bracts and bracteoles ovate to lanceolate, 3.5–6 mm long, 1–2.5 mm wide at base, persistent, ciliate. Flowers bisexual (perfect). Hypanthium covered with simple and stalked–stellate or branched hairs, fruiting hypanthium 4–6 mm long, 2–5 mm wide. Calyx lobes erect, triangular or oblong–ovate, persistent, 4–7.5 mm long, ca. 2 mm wide at base, ciliolate. Corolla of 4 petals, obovate, ± obliquely truncate, 10–15 mm long, 10–14 mm wide. Stamens 8, dimorphic; anthers opening by a pore, larger anthers pink, 3–4 mm long, connective prolonged 0.25–0.5 mm, with a 2-lobed appendage ca. 0.5 mm long, smaller anthers yellow, 2.5–3.5 mm long, with connective and appendage somewhat shorter but otherwise as in larger anthers. Ovary inferior, distinct, 4-celled, apex bristly; ovules numerousm placentation axile; style simple; stigma terminal.

Fruit: Capsules enclosed by the hypanthium. Seeds ca. 0.5 mm long; endosperm absent.

Ploidy: 2n = 36

Habitat: Mesic to wet disturbed sites and trail margins.

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Birds
Other Animals

Vegetative Reproduction

Pollinators

Bibliography

Name Published In: Comm. Phytogr. 2: 78 (1840)

Other References

Wagner et al. 1990:912 (K, O, H); Hughes 1995:7 (Mo); Wood 2006:18 (L); Oppenheimer & Bustamente 2014a:20 (EM)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Pterolepis glomerata Hooleinaiwa Weed in the Pandanus zone. Preserved_Specimen Takeuchi, W.N. Oahu BISH 1986-11-01
2 Pterolepis glomerata Kanaele Swamp (Wahiawa Bog); along trail to bog Preserved_Specimen Wagner, W.L. 4989 Kauai BISH 1983-08-27
3 Pterolepis glomerata Waianae Mountains; Palikea Preserved_Specimen Pearsall, G.A. Oahu BISH 1953-09-05
4 Pterolepis glomerata Along ridge near Bryans Mt. House Along ridge. Preserved_Specimen Corn, C. Oahu BISH 1983-07-06
5 Pterolepis glomerata Waahila Ridge Trail, Koolau Mountains, Oahu, Hawaii Growing along trail edge. Preserved_Specimen Small slightly woody herb, with 4-petalled flowers, pink, that fall apart easily. Crago, L.M. 2005140 Oahu BISH 2005-05-16
6 Pterolepis glomerata Puna District; Hawaii Volcanoes National Park; near Makaopuhi Crater Growing with Andropogon beside trail in open Metrosideros forest. Preserved_Specimen Low shrub ca. 2 ft. tall. Flower petals pale pink. Cuddihy, L.W. 1461 Hawaii BISH 1983-09-02
7 Pterolepis glomerata Koolau Range; Kawailoa. Paalaa Uka Pupukea Rd., north of Kawainui Stream Very common & abundant weed in roadside thickets & waste grounds. Preserved_Specimen Mäkinen, L. 66428 Oahu BISH 1966-02-27
8 Pterolepis glomerata Kipapa Trail, several meters from boundary, N side of trail disturbed wet lowland forest; Metrosideros, Acacia, Dicranopteris Preserved_Specimen ~30 cm herb; flower light pink, conspicuous claw-like yellow anthers Reynolds, L.S. 88 Oahu BISH 2006-06-01
9 Pterolepis glomerata Koolau Range; Poamoho Roadside weed, growing gregariously. Preserved_Specimen Flowers pale lavender-pink. Greenwell, A.B.H. 19525 Oahu BISH 1949-03-05
10 Pterolepis glomerata Keopukaloa Common in pastures and waste areas. Preserved_Specimen Petals lavender. Oppenheimer, H.L. 110711 Molokai BISH 2007-11-06
11 Pterolepis glomerata Koolau Range; Summit & Ridge area at top of Castle Trail Straggling through other vegetation near small creek. Preserved_Specimen Calyx green; petals pink, filaments light yellow, anthers yellow at base to purplish above, style greenish, leaves tinged with red. Crosby, M.R. 1398 Oahu BISH 1964-06-16
12 Pterolepis glomerata Koolau Mountains; Mauumae Ridge, near Puu Lanipo. Along ridge trail Common herb in disturbed areas. With grasses & sedges. Preserved_Specimen To 20 inches height, usually smaller. Petals 4, pink. Nagata, K.M. 1207 Oahu BISH 1973-10-21
13 Pterolepis glomerata Hanalei District. Lumahai, upper valley. Metrosideros lowland wet forest bordered by steep slopes of Dicranopteris and Diplopteryglum matting ferns with Antidesma platyphyllum var. hillebrandii, Syzyglum sandwicensis, Cheirodendron forbesii, Ilex anomala, Perrottetia sandwicensis, Dubautia knudsenii, Psychotria mariniana, P. hexandra, Kadua affinis. Preserved_Specimen Herb, 25-40 cm. tall, corolla pink-white, anthers yellow, some prolonged and pink, common around LZ and camp. Wood, K.R. 17414 Kauai BISH 2017-05-18
14 Pterolepis glomerata Kauai County Kawaihau District: Kuilau Trail, below Keahua Arboretum. Disturbed lowland windward Forest in mowed meadow of picnic area W/ grasses, Desmodium, Melastoma, Trifolium, beyond mowed meadow w/ Dicranopteris, Metrosideros, Clidemia, Sphaeropteris cooperi, weedy grasses, Melas Preserved_Specimen Up to 1 ft tall. Pink petals fallen on ground, thin. Stem square w/ dark green wings toward base w/ hairs. Flw clustered a tapex, calyx green w/ purple in calyx tips. Lvs w/ short hairs below, dark green w/ hairs and 3 impressed veins. Top of leaf w/ purple blotches. Tangalin, N 3571 Kauai BISH 2013-11-22
15 Pterolepis glomerata East Maui, Hana District, Kawaipapa drainage basin. Observed along perennial stream. Vegetation: Metrosideros, Cheirodendron, Dicranopteris, Diplopterygium, Broussaisia, Clermontia, Kadua, Coprosma, Pipturus, Cibotium, Sadleria, Labordia, Dryopteris, Diplazium, Asplenium, Isachne, Deschampsia, Pilea, Peperomia, Blechnum, Adiantum, Selaginella, Psidium, Clidemia, Tibouchina, Rubus, Axonopus, Sacciolepis, Hedychium, Paspalum. Preserved_Specimen Single herb; flower was pale lavender, but was lost. Oppenheimer, H.L. 41325 Maui BISH 2013-04-23
16 Pterolepis glomerata Mt. Kaala Summit shrubbery, on open Lycopodium-Rubus covered bank of small stream. Preserved_Specimen Bushy shrublet. Stems green, sometimes reddish above nodes. Leaves green, often dark wine-red. Pedicel red, flower buds wine-red, calyx green, often dark wine red. Petal light purple. Anthers yellow, appendage dark-violet. van Royen, P. 10215 Oahu BISH 1968-02-23
17 Pterolepis glomerata East Maui, Hana District, Waihoi Valley, vicinity of Waiohonu Stream. Growing in saturated soil in disturbed areas of Metrosideros/Cheirodendron Wet Forest. Preserved_Specimen Naturalized herbs; flowers pink. Oppenheimer, H.L. 51316 Maui BISH 2013-05-29
18 Pterolepis glomerata Pupukea Trail Common trailside shrub. Preserved_Specimen 2.5 ft. tall. Petals lavender; anthers bright yellow. Crosby, M.R. 1562 Oahu BISH 1964-06-26
19 Pterolepis glomerata East Maui, Hana District, Hana FR, Waihoi Valley, back of valley Local in open, disturbed site in Metrosideros Wet Forest Preserved_Specimen Oppenheimer, H.L. 51405 Maui BISH 2014-05-02
20 Pterolepis glomerata Koloa District: Lihue-Koloa Forest Reserve, Wahiawa bog (Kanaele) just west of Mt. Kahili Bog area with low shrubs, Cyperaceae & ferns. Preserved_Specimen Herb to 30-40 cm tall. Petals 4, pink, fugaceous, stamens yellow & pink. Lorence, D.H. 5584 Kauai BISH 1987-09-30
21 Pterolepis glomerata Waikakea Forest Reserve; Mamaki Road to Kulani Prison, 7 mi SW of State Route 11 Preserved_Specimen Herb; corollas pink. Miller, J.S. 7937 Hawaii BISH 1992-08-06
22 Pterolepis glomerata Pupukea Along moist trail, locally naturalized. Preserved_Specimen Degener, O. 20088 Oahu BISH 1949-03-20
23 Pterolepis glomerata W of Hauola Gulch, N of Puu Aalii, along fenceline on ridgetop In degraded shrubland. Preserved_Specimen Oppenheimer, H.L. 50615 Lanai BISH 2006-05-10
24 Pterolepis glomerata Kahuku Forest Reserve, summit trail Abundant along trail in open ohia forest with Dicranopteris ground cover. Preserved_Specimen Gerrish, G. Oahu BISH 1977-09-01
25 Pterolepis glomerata Opaeula Locally naturalized along drying stoney edge of stream. Preserved_Specimen Degener, O. 26796 Oahu BISH 1959-11-15
26 Pterolepis glomerata Koolau Range; Poamoho Preserved_Specimen A weedy plant. Rockafellow, R. Oahu BISH 1956-07-08
27 Pterolepis glomerata Koolau Range; Pupukea Preserved_Specimen Stone, B.C. 3659 Oahu BISH 1961-09-01
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