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Melica geyeri
GEYER'S ONIONGRASS

Higher Taxonomy
Family: Poaceae (Gramineae)View DescriptionDichotomous Key

Common Name: GRASS FAMILY
Habit: Annual to woody perennial herb; roots generally fibrous. Stem: generally round, hollow; nodes swollen, solid. Leaf: alternate, 2-ranked, generally linear, parallel-veined; sheath generally open; ligule membranous or hairy, at blade base. Inflorescence: various (of generally many spikelets). Spikelet: glumes generally 2; florets (lemma, palea, flower) 1--many; lemma generally membranous, sometimes glume-like; palea generally +- transparent, +- enclosed by lemma. Flower: generally bisexual, minute; perianth vestigial; stamens generally 3; stigmas generally 2, generally plumose. Fruit: grain, sometimes achene- or utricle-like.
Genera In Family: 650--900 genera; +- 10550 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials). Note: Generally wind-pollinated. Achnatherum, Ampelodesmos, Hesperostipa, Nassella, Piptatherum, Piptochaetium, Ptilagrostis moved to Stipa; Elytrigia, Leymus, Pascopyrum, Pseudoroegneria, Taeniatherum to Elymus; Hierochloe to Anthoxanthum; Lolium, Vulpia to Festuca; Lycurus to Muhlenbergia; Monanthochloe to Distichlis; Pleuraphis to Hilaria; Rhynchelytrum to Melinis. The following taxa (in genera not included here), recorded in California from historical collections or reported in literature, are extirpated, lacking vouchers, or not considered naturalized: Acrachne racemosa (Roth) Ohwi, Allolepis texana (Vasey) Soderstr. & H.F. Decker, Amphibromus nervosus (Hook. f.) Baill., Axonopus affinis Chase, Axonopus fissifolius (Raddi) Kuhlm., Coix lacryma-jobi L., Cutandia memphitica (Spreng.) K. Richt., Dinebra retroflexa (Vahl) Panz., Eremochloa ciliaris (L.) Merr., Eustachys distichophylla (Lag.) Nees, Gaudinia fragilis (L.) P. Beauv., Miscanthus sinensis Andersson, Neyraudia arundinacea (L.) Henrard, Phyllostachys aurea Rivière & C. Rivière, Phyllostachys bambusoides Siebold & Zuccarini, Rottboellia cochinchinensis (Lour.) Clayton, Schedonnardus paniculatus (Nutt.) Branner & Coville, Schizachyrium cirratum (Hack.) Wooton & Standl., Schizachyrium scoparium (Michx.) Nash, Themeda quadrivalvis (L.) Kuntze, Thysanolaena latifolia (Hornem.) Honda, Tribolium obliterum (Hemsl.) Renvoize, Zea mays L., Zizania palustris L. var. interior (Fassett) Dore, Zoysia japonica Steud. Paspalum pubiflorum E. Fourn., Paspalum quadrifarium Lam., are now reported for southern California (J Bot Res Inst Texas 4:761--770). See Glossary p. 30 for illustrations of general family characteristics.
eFlora Treatment Author: James P. Smith, Jr., except as noted
Scientific Editor: James P. Smith, Jr., J. Travis Columbus, Dieter H. Wilken.
Genus: MelicaView DescriptionDichotomous Key

Common Name: ONIONGRASS, MELIC
Habit: Perennial herb, generally cespitose, rhizomed or not, corms present or 0. Stem: generally erect. Leaf: +- basal; sheath closed to near top, glabrous to short-hairy; ligule thin, membranous, tip obtuse to truncate, generally jagged; blade flat, veins inconspicuous. Inflorescence: raceme- or panicle-like, generally appressed to main axis. Spikelet: glumes papery, translucent, back rounded, tip rounded, lower glume 3--5-veined, upper 1--3-veined; axis generally breaking above glumes; lower florets bisexual, 1--7, uppermost florets sterile, +- densely clustered at axis tip; lemma +- like glumes, prominently 5--7-veined, veins not converging, base occasionally red; palea < lemma. Chromosomes: n=9 in all California taxa.
Species In Genus: +- 80 species: generally temperate, except Australia. Etymology: (Latin: honey, or old Italian name for plant with sweet sap)
eFlora Treatment Author: Susan J. Bainbridge

Melica geyeri Munro
NATIVE
Habit: Rhizomes short to long. Stem: 8--20 dm; corms sessile. Leaf: ligule 2--3.5 mm; blade 2--8 mm wide; sheath of basal leaf becoming fibrous. Inflorescence: 11--17 cm; branches spreading to reflexed; spikelets 1--6 per branch. Spikelet: 8--24 mm; glumes persistent, lower 3.5--7 mm, upper 5.5--11 mm, tip extending to +- 3/4 lowest lemma; bisexual florets 2--6; lemma 8--11 mm, glabrous or scabrous, tip rounded to acute, sometimes notched, awn occasionally to 2 mm; palea +- 7/8 lemma; sterile cluster 3--7 mm, tapered, resembling bisexual floret.
Ecology: Dry open slopes, oak woodland, conifer forest; Elevation: < 2200 m. Bioregional Distribution: KR, NCoR, CaRH, n&c SNH, SnFrB, n SCoRO; Distribution Outside California: Oregon, British Columbia. Flowering Time: Apr--Jul
Synonyms: Melica geyeri var. aristulata J.T. Howell; Melica geyeri var. geyeri
Unabridged Note: If recognized taxonomically, plants in SnFrB (Marin Co.) with lemma awns 0.5--2 mm assignable to Melica geyeri var. aristulata J.T. Howell.
eFlora Treatment Author: Susan J. Bainbridge
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Citation for this treatment: Susan J. Bainbridge 2016. Melica geyeri, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33078, accessed on February 14, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 14, 2016.


Melica geyeri
click for enlargement
© 2008 Keir Morse
Melica geyeri
click for enlargement
© 2008 Keir Morse
Melica geyeri
click for enlargement
© 2008 Keir Morse
Melica geyeri
click for enlargement
© 2008 Keir Morse
Melica geyeri
click for enlargement
© 2008 Keir Morse
Melica geyeri
click for enlargement
© 2009 Julie Kierstead Nelson

More photos of Melica geyeri in CalPhotos


Geographic subdivisions for Melica geyeri:
KR, NCoR, CaRH, n&c SNH, SnFrB, n SCoRO;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.