Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
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

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.
eFlora Treatment Author: Elizabeth M. Skendzic
Jepson Online Interchange
Weed listed by Cal-IPC

Previous taxon: Saccharum
Next taxon: Schismus

Name Search

Contact/Feedback

Citation for this treatment: Elizabeth M. Skendzic 2016. Saccharum ravennae, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=42554, accessed on February 10, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 10, 2016.


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.);
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.
READ ABOUT YELLOW FLAGS
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

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