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
Holcus mollis
CREEPING VELVET 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: HolcusView DescriptionDichotomous Key

Common Name: VELVET GRASS
Habit: (Annual) perennial herb, generally cespitose or from rhizomes; glabrous to velvety soft-hairy. Leaf: generally basal; ligule membranous, truncate, puberulent; blade flat. Inflorescence: panicle-like, +- congested to open. Spikelet: laterally compressed, breaking below glumes, falling as 1 unit; glumes +- equal, lower 1-veined, upper 3-veined; florets generally 2(3), lower floret bisexual, upper staminate or sterile; callus hairy; lemma +- 2 mm, shiny, membranous, faintly 3--5-veined, lemma of lower floret awnless, lemma of upper floret awned near 2-lobed tip; palea +- = lemma.
Species In Genus: +- 8 species: temperate Eurasia, Africa. Etymology: (Latin: a grass)
eFlora Treatment Author: Dieter H. Wilken

Holcus mollis L.
NATURALIZED
Stem: ascending to decumbent, 3--8 dm. Leaf: ligule 2--5 mm, obtuse, jagged; blade 3--15 cm, 4--9 mm wide. Spikelet: glumes 4--5 mm, tan, tinged +- purple, minutely scabrous on back, keel and veins short-hairy; lemma 2--3 mm. Chromosomes: 2n=28,35,42,49.
Ecology: Moist sites; Elevation: < 700 m. Bioregional Distribution: NCo, n SNH, SnFrB; Distribution Outside California: to Canada; scattered in eastern United States; native to temperate northern Europe. Flowering Time: Jun--Aug
eFlora Treatment Author: Dieter H. Wilken
Jepson Online Interchange

Previous taxon: Holcus lanatus
Next taxon: Hordeum

Name Search
botanical illustration including Holcus mollis

Contact/Feedback

Citation for this treatment: Dieter H. Wilken 2016. Holcus mollis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28336, accessed on May 01, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 01, 2016.


Holcus mollis
click for enlargement
© 2008 Steve Matson
Holcus mollis
click for enlargement
© 2008 Steve Matson
Holcus mollis
click for enlargement
© 2008 Steve Matson
Holcus mollis
click for enlargement
© 2008 Steve Matson
Holcus mollis
click for enlargement
© 2008 Steve Matson
Holcus mollis
click for enlargement
© 2008 Steve Matson

More photos of Holcus mollis in CalPhotos


Geographic subdivisions for Holcus mollis:
NCo, n SNH, SnFrB;
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.