Eragrostis pectinacea

Eragrostis pectinacea is a species of grass known by the common names tufted lovegrass and Carolina lovegrass. This plant is native to the Americas from Canada to Argentina. It is widespread, growing in most open spaces at varying elevations and habitats, including in disturbed areas and roadsides.

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Korean name: Deul-bi-no-ri (ṻffiƚffl) Annual. Butt sheaths green, or purple. Culms erect to geniculate or decumbent, 10 - 30 cm long. Leaf-sheaths 3 - 6 cm long. hirsute at the apices, oral hairs bearded, to 2 - 2.5 mm long. Leaf-blades 5 - 10 cm long, 1 - 3 mm wide, abaxal surfaces glabrous and smooth, adaxal surface scaberulous; ligules fringe of hairs, 0.5 - 1 mm long. Panicle usually open, sometimes contracted, ovate, 5 - 10 cm long, 2 - 7 cm wide, branches simple and bearded in axils, primary branches 0.5 - 3 cm, solitary or paired at the lowest 2 nodes, flexible, appressed to widely divergent, sometimes capillary. Spikelets solitary, appressed, 4 - 7 mm long, 1 - 1.5 mm wide, pedicelled, comprising 5 - 10 fertile florets, linear-oblong to narrowly lanceolate, yellowish-brown or dark reddish-pupple, laterally compressed, rhachilla persistent, retaining paleas. Glumes deciduous, similar, sublate to ovate-lancelate, shorter than spikelet. Lower glume 0.5 - 1.5 mm long, 1 / 2 length of upper glume, membranous, 1 - keeled, 1 - veined, primary vein scaberulous, apex acute. Upper glume 1 - 2 mm long, as long as adjacent lemma, usually broader than the lower glumes, membranous, grayish-green proximally, reddish-purple distally, 1 - keeled, 1 - veined, primary vein scaberulous, apex acute. Lemma ovate, 1.5 - 2 mm long, membranous, keeled, 3 - veined, midvein scaberulous, lateral veins distinct, close to margins, extending close to apex, apex acute. Palea 1.5 mm long, keels scaberulous, apex obtuse. Anthers 3, 0.2 - 0.5 mm, purplish. Caryopsis 0.5 - 0.9 mm with adherent pericarp, ellipsoid, slightly laterally compressed, without sulcus, 0.5 - 1 mm long, brownish. Flowering and Fruiting at August to September. Habitats. Disturbed areas. near paved roads, rice field roads.

Eragrostis pectinacea is an annual tuft-forming bunchgrass, reaching maximum heights of anywhere from 10 to 80 centimeters. It is mostly hairless except for a fringe of hairs near where the leaf blade meets the sheath. The inflorescence is open with spreading branches holding yellowish to purplish spikelets, each just under centimeter long. Each narrow spikelet has up to 15 or 20 tiny florets.

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Eragrostis pectinacea was first described by André Michaux in 1803, as Poa pectinacea. It was transferred to Eragrostis in 1841 by Christian Nees von Esenbeck. Eragrostis tracyi is treated by some sources as a variety of this species, but recognized by others as a separate species.

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casual

Distribution. NE Asia, SW Europe, America. Specimens examined. Maechon-ri, Geumseo-myeon, Sancheong-gun, Gyeongsangnam-do, N 35 ° 41 ′ 83.25 ″, E 127 ° 87 ′ 20.63 ″, 16 Aug. 2014. J. H. Kim 141371 (2 sheets, KB). The Eragrostis Wolf is a large and widespread genus of the family Poaceae and includes 412 species (Kew Grassbase, 2006). In Korea, numbers of Eragrostis taxa were counted to five (Lee, 2007) or seven (Korea National Arboretum, 2011; Lee et al., 2011). The species in the Eragrostis are annual or perennial, rhizomes and stolons mostly absent. Most distinguishing characters are often glandular on the leaf sheaths and inflorescence, spikelets consisting of many-florets, and rhachilla mostly persistent at maturity. The Eragrostis is commonly used as a livestock fodder. E. pectinacea, which is now added to the list of Korean vascular plants, is native to the Americas from southern Canada to Argentina (Peterson, 2003). This species is growing widely in open areas with diverse habitats and elevations, even in a disturbed grassland and roadsides. The forms of external morphology are similar to those of E. multicaulis Steud. The panicle of E. pectinacea is contracted, or somewhat open but contracted at maturity. However, panicles of E. multicaulis are always open. The color of inflorescence of this species is tinged purple while that of E. multicaulis is grayish green.

Eragrostis pectinacea is widely distributed in the Americas, from Canada through the United States to Mexico in northern America, in Central America and the Caribbean, and in parts of South America. It has been introduced into Europe and further south than its native range in South America, in northeast Argentina and Uruguay.

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pan-American