Eragrostis

Belongs within: Chloridoideae.
Contains: Eragrostis series Megastachyae.

Eragrostis, lovegrasses, is a genus of often glandular grasses found in tropical and warm temperate regions of the world (Hickman 1993).

Characters (from Hickman 1993): Annual or perennial, often glandular; glands often wart-like, circular, pitted. Leaf with sheath margin hairy on sides just below collar; ligules ciliate. Inflorescence generally panicle-like, open or dense, sometimes spike-like, often glandular. Spikelet laterally compressed; glumes more or less unequal, acute or acuminate, 1(3)-veined; florets 3–many, axis breaking above glumes and between florets (or persistent with glumes and lemmas deciduous, paleas remaining attached or not); lemma keeled or rounded, acute or obtuse, 3-veined, veins generally obvious; palea more or less equal to lemma. Fruit lens-shaped or elliptic, sometimes grooved, generally red-brown.

<==Eragrostis
    |--E. sect. CataclastosG52
    |    |--E. japonica (Thunb.) Trin. 1831G52 [incl. E. tenellaG52, Poa tenellaB78, E. interrupta var. tenuissimaG52]
    |    `--E. kennedyae Turner 1894G52
    |--E. sect. ChaunostachyaB78
    |    |--E. leptostachya [=Poa leptostachya]B78
    |    |--E. megalospermaB78
    |    `--E. nigraB78
    |         |--E. n. var. nigraB78
    |         `--E. n. var. trachycarpaB78
    |--E. sect. CylindrostachyaB78
    |    `--E. stenostachya [=Poa stenostachya]B78
    |         |--E. s. var. stenostachyaB78
    |         `--E. s. var. floribundaB78
    `--E. sect. PteroessaG52
         |--E. ser. LeptostachyaeG52
         |    |--E. australasica (Steud.) Hubb. 1941G52 (see below for synonymy)
         |    |--E. brownii (Kunth) Nees 1841G52 (see below for synonymy)
         |    |    |--E. b. var. browniiB78
         |    |    `--E. b. var. patensB78
         |    |--E. curvulaG52 [incl. E. chloromelasMS98]
         |    |--E. leptocarpa Benth. 1878G52
         |    `--E. parviflora (Br.) Trin. 1831G52 (see below for synonymy)
         |         |--E. p. var. parvifloraS06
         |         `--E. ‘pilosa’ var. delicatulaS06
         `--E. ser. MegastachyaeG52
Eragrostis incertae sedis:
  E. aristataCV06
  E. asperaP03
  E. atrovirensS06
  E. barrelieriMS98
  E. benthamiiMLP09
  E. brachyphyllaP03
  E. capensisGPWG01
  E. capillaris [=Poa capillaris, E. pilosa var. capillaris]S06
  E. ciliarisPP07
  E. coarctataP03
  E. cumingiiLK14
  E. exiguaLK14
  E. eximiaB78
  E. fallaxLK14
  E. ferrugineaMH98
  E. filicaulisLK14
  E. flaccida Lindman 1900S06
  E. frankiiMS98
  E. gangeticaS03
  E. hypnoidesH93
  E. kingesiiCV06
  E. lehmannianaMS98
  E. leptophyllaMK08
  E. lugensS06
  E. lutescensH93
  E. mexicana [=Poa mexicana]S06
    |--E. m. ssp. mexicana [incl. E. neomexicana]H93
    `--E. m. ssp. virescens (Presl) Koch & Vega 1985H93, MS98 (see below for synonymy)
         |--E. m. ssp. v. var. virescensS06
         |--E. ‘virescens’ var. major Hackel in Stuckert 1906S06
         `--E. ‘virescens’ var. trachyphylla Hackel in Stuckert 1906S06
  E. minor [incl. E. poaeoides]H93
  E. mucronataK90
  E. multicaulisMS98
  E. neesii Trin. 1831S06
  E. nigricans (H. B. K.) Steud. 1855 [=Poa nigricans, Megastachya nigricans Roem. & Schult. 1815]S06
  E. omahekensisCV06
  E. pectinacea [incl. E. purshii]V72
    |--E. p. var. pectinacea [incl. E. diffusa]H93
    `--E. p. var. miserrima [incl. E. arida, E. tephrosanthos]H93
  E. pergracilisKM08
  E. petraeaLK14
  E. plumosaB78 [incl. E. amabilisLK14, Poa amabilisB78]
  ‘Poa’ porranthaB78
  E. potamophilaLK14
  E. pygmaeaCV06
  E. retinensS06
  E. rigidiusculaLK14
  E. sabinaeCV06
  E. scopelophilaCV06
  E. spartinoidesLK14
  E. spectabilisV72
    |--E. s. var. spectabilisV72
    `--E. s. var. sparsihirsutaV72
  E. stenothyrsaCV06
  E. tefMS98
  E. tenellulaLK14
  E. tenuifoliaS03
  E. viscosaPP07
  E. walteriGPWG01

Eragrostis australasica (Steud.) Hubb. 1941^G52 [=Glyceria australasica^G52; incl. Poa ramigera Muell. 1855^{G52, B78}, G. ramigera^B78]

Eragrostis brownii (Kunth) Nees 1841^G52 [=Poa brownii^B78; incl. Megastachya polymorpha^B78, P. polymorpha^B78, Eragrostis pubescens^B78, P. pubescens^B78, E. urvillei^B78, E. zeylanica^B78]

Eragrostis mexicana ssp. virescens (Presl) Koch & Vega 1985^{H93, MS98} [=Poa virescens^S06, E. virescens (Kunth) Presl 1830^S06; incl. E. orcuttiana^H93]

Eragrostis parviflora (Br.) Trin. 1831^G52 [=Poa parviflora^B78; incl. E. pellucida^G52, Poa pellucida^B78, E. pilosa^G52, Poa pilosa^B78, P. verticillata^B78]

*Type species of generic name indicated

References

[B78] Bentham, G. 1878. Flora Australiensis: A description of the plants of the Australian Territory vol. 7. Roxburghiaceae to Filices. L. Reeve & Co.: London.

[CV06] Craven, P., & P. Vorster. 2006. Patterns of plant diversity and endemism in Namibia. Bothalia 36 (2): 175–189.

[G52] Gardner, C. A. 1952. Flora of Western Australia vol. 1 pt 1. Gramineae. William H. Wyatt: Perth.

[GPWG01] Grass Phylogeny Working Group. 2001. Phylogeny and subfamilial classification of the grasses (Poaceae). Annals of the Missouri Botanical Garden 88 (3): 373–457.

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[K90] Keighery, G. J. 1990. Vegetation and flora of Shark Bay, Western Australia. In: Berry, P. F., S. D. Bradshaw & B. R. Wilson (eds) Research in Shark Bay: Report of the France-Australe Bicentenary Expedition Committee pp. 61–87. Western Australian Museum.

[KM08] Keighery, G. J., & W. Muir. 2008. Vegetation and vascular flora of Faure Island, Shark Bay, Western Australia. Records of the Western Australian Museum Supplement 75: 11–19.

[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.

[MS98] Martini, F., & H. Scholz. 1998. Eragrostis virescens J. Presl (Poaceae), a new alien species for the Italian flora. Willdenowia 28: 59–64.

[MLP09] McKenzie, N. L., S. van Leeuwen & A. M. Pinder. 2009. Introduction to the Pilbara Biodiversity Survey, 2002–2007. Records of the Western Australian Museum Supplement 78 (1): 3–89.

[MK08] Mockford, E. L., & P. D. Krushelnycky. 2008. New species and records of Liposcelis Motschulsky (Psocoptera: Liposcelididae) from Hawaii with first description of the male of Liposcelis bostrychophila Badonnel. Zootaxa 1766: 53–68.

[MH98] Morikawa, H., A. Higaki, M. Nohno, M. Takahashi, M. Kamada, M. Nakata, G. Toyohara, Y. Okamura, K. Matsui, S. Kitani, K. Fujita, K. Irifune & N. Goshima. 1998. More than a 600-fold variation in nitrogen dioxide assimilation among 217 plant taxa. Plant, Cell and Environment 21: 180–190.

[PP07] Pandey, R. P., & P. M. Padhye. 2007. Studies on phytodiversity of Arid Machia Safari Park-Kailana in Jodhpur (Rajasthan). Bulletin of the Botanical Survey of India 49: 15–78.

[P03] Paul, T. K. 2003. Botanical observations on the Purulia pumped storage hydropower project area, Bagmundi Hills, Purulia district, West Bengal. Bulletin of the Botanical Survey of India 45: 121–142.

[S03] Singh, J. N. 2003. Grasses and their hydro-edaphic characteristics in the grassland habitat of Nilgiris Biosphere Reserve, Tamil Nadu. Bulletin of the Botanical Survey of India 45: 143–164.

[S06] Stuckert, T. 1906. Segunda contribución al conocimiento de las gramináceas Argentinas. Anales del Museo Nacional de Buenos Aires, serie 3, 6: 409–555.

[V72] Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Cranbrook Institute of Science and University of Michigan Herbarium.