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Vascular Plants of California
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Saccharum ravennae
RAVENNA GRASS


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: SaccharumView Description 


Habit: Perennial herb, cespitose, or rhizomed. Stem: erect. Leaf: cauline; sheaths > internodes; ligule short, membranous or hairy; blade flat. Inflorescence: panicle-like, branches numerous, raceme-like, densely silky-hairy. Spikelet: in pairs, similar, sessile and stalked; pair breaking with subtending axis segment as a unit or at base of stalked spikelet; glumes > florets, florets 2, lower vestigial, upper fertile; lemma awned or awn 0; palea < lemma or 0.
Species In Genus: 35--40 species: tropics, subtropics, southeastern Asia. Some ornamental, sugarcane (Saccharum officinarum L.) widely cultivated for sugar. Etymology: (Latin: sugar)
eFlora Treatment Author: Elizabeth M. Skendzic
Unabridged Reference: Webster & Shaw 1995 Sida 16:551--580
Saccharum ravennae (L.) L.
NATURALIZED
Stem: densely tufted, generally 2--4 m. Leaf: sheath glabrous; ligule < 1 mm; blade 5--10 dm, < 12 mm wide, generally densely hairy near ligule, strongly serrate. Inflorescence: plume-like, 2.5--6 dm. Spikelet: 3.5--7 mm; glumes lanceolate, base densely silky-hairy; lemma awned, awn 3--5 mm; stalked spikelet deciduous. Chromosomes: 2n=20.
Ecology: Ditch banks, marshes; Elevation: < 300 m. Bioregional Distribution: NCoRI, GV, DSon (Imperial Co.); Distribution Outside California: scattered across United States; native to Eurasia. Flowering Time: Jul--Sep
Synonyms: Erianthus ravennae (L.) P. Beauv.
Jepson eFlora Author: Elizabeth M. Skendzic
Unabridged Reference: Webster & Shaw 1995 Sida 16:551--580
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Citation for this treatment: Elizabeth M. Skendzic 2012, Saccharum ravennae, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=42554, accessed on July 16, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on July 16, 2019.

Saccharum ravennae
click for enlargement
© 2011 Steve Matson
Saccharum ravennae
click for enlargement
© 2011 Steve Matson
Saccharum ravennae
click for enlargement
© 2011 Steve Matson
Saccharum ravennae
click for enlargement
© 2011 Steve Matson
Saccharum ravennae
click for enlargement
© 2011 Steve Matson

More photos of Saccharum ravennae in CalPhotos



Geographic subdivisions for Saccharum ravennae:
NCoRI, GV, DSon (Imperial Co.)
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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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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.