Common Names
Common Names in English:
Acuate, Silk Leaf, Silkleaf, Yaa Kammayee Lagascea Mollis
Description
Genus Lagascea
Shrubs [annuals
, perennials
], to 50-100[-300] cm. Stems erect
[ascending
to decumbent
], branched from bases
or ± throughout. Leaves cauline ; opposite; petiolate
[sessile]; blades
3-nerved, lance-ovate to ovate
[lanceolate to oblanceolate
], bases broadly cuneate [to subauriculate], margins
± serrate, faces
usually sericeous
to strigose
or glabrate
, often stipitate-glandular
. Heads discoid
, borne in headlike glomerules
(of [8-]30-50+, 1(-2) [-8]-flowered heads
, glomerules borne singly or in ± corymbiform
[racemiform
] arrays). Involucres cylindric
, 1-2 mm diam. (glomerules of heads usually subtended by leaves or ± foliaceous
bracts). Phyllaries persistent
, 4-5[-8+] in ± 1 series (linear-attenuate, proximally connate
, often 1 or more with 1[-3+] glands
in abaxial
face). Receptacles convex
(often hirtellous), rarely paleate (paleae linear
). Ray
florets 0. Disc florets 1(-2) [-8], bisexual
, fertile
; corollas yellow [white, pink, or red], tubes
shorter than cylindric to campanulate
throats
, lobes
5, lance-linear
to lance-ovate [rounded-deltate] (often hairy
). Cypselae (brown to black) narrowly cylindric to obovoid
or clavate
(faces glabrous
or pilosulous, minutely grooved
) ; pappi ± coroniform
. x = 17.
Species 8: sw United
States, Mexico, Central America (to Nicaragua) ; introduced
in West Indies, South America, Asia (India, Java, Sri Lanka, Thailand), Africa, Pacific Islands (Hawaii).
Lagascea mollis Cavanilles, now a nearly pantropical
weed
, was collected at Apalachicola, Franklin County, Florida (Chapman, n.d., presumably ca.
1860), evidently from an ephemeral
population, probably from ballast
.Elizabeth M. Harris "Lagascea". in Flora of North America Vol. 21 Page 135, 136. Oxford University Press. Online at EFloras.org.
Physical Description
Habit: Forb/herb
Biology
Reproduction
Duration: Annual
Taxonomy
- Kingdom:
Plantae
(
)
- Plants
- Phylum:
Tracheophyta
()
- Vascular Plants
- Class:
Magnoliopsida
()
- Dicotyledons
- Order:
Asterales
()
- Family:
Noctuoidea
()
- Genus:
Lagascea
()
- Cavanilles, Anales Ci. Nat. 6: 331. 1803.
- Doll's-head, acuate, silk-leaf, velvet-bush [For Mariano Lagasca y Segura, Spanish botanist at the Madrid Botanical Garden]
- Specific epithet:
mollis
- Cav.
- Botanical name: - Lagascea mollis Cav.
- Specific epithet:
mollis
- Cav.
- Genus:
Lagascea
(
- Family:
Noctuoidea
(
- Order:
Asterales
(
- Class:
Magnoliopsida
(
- Phylum:
Tracheophyta
(
Unambiguous Synonyms
- Lagascea mollis Cav.
- Nocca mollis (Cav.) Jacq.
Notes
Name
Status: Accepted Name
. Latest taxonomic
scrutiny: 15-Mar-2000
Place of publication
: Anales Ci. Nat. 6:333, t. 44. 1803
Name verified on 27-Apr-1992 by ARS Systematic Botanists. Last updated: 09-May-2007
Similar Species
Members of the genus Lagascea
There are approximately 21 species in this genus:
L. angustifolia · L. aurea · L. biflora · L. campestris · L. decepiens · L. decipiens (Beguiling Mexican Daisy) · L. decipiens var. glandulosa · L. glandulosa · L. helianthifolia · L. heteropappus · L. kunthiana · L. latifolia · L. media · L. mollis (Acuate) · L. palmeri · L. parvifolia · L. pringlei · L. rigida · L. rubra · L. suaveolens · L. tomentosa
Bibliography
- Holm, L. et al. 1979. A geographical atlas of world weeds. (Atlas WWeed)
- McVaugh, R. 1983–. Flora Novo-Galiciana. (F NGalicia)
- Seed Regulatory and Testing Branch, Agricultural Marketing Service, U.S.D.A. 1999. State noxious-weed seed requirements recognized in the administration of the Federal Seed Act. (State Noxweed Seed)
- Stuessy, T. 1978. Fieldiana, Bot. 38:90–91.
- Harris, E. M. 1994. Developmental evidence for the derivation of syncephalia in Lagascea (Heliantheae; Asteraceae). Amer. J. Bot. 81: 1139-1148.
- Stuessy, T. F. 1976. A systematic review of the subtribe Lagasceinae (Compositae, Heliantheae). Amer. J. Bot. 63: 1289-1294.
- Stuessy, T. F. 1978. Revision of Lagascea (Compositae, Heliantheae). Fieldiana, Bot. 38: 75-133.
More Info
- Search for Pictures: images.google.com
- Search for Scholarly Articles: Google Scholar
- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
Notes
Contributors
- Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
- Global Biodiversity Information Facility. Accessed October 14, 2007. http://www.gbif.org Mediated distribution data from provider.
- MBLWHOI Library: Universal Biological Index and Organizer. uBio.org accessed July 17, 2008.
- USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 28, 2008)
Data Sources
Accessed through GBIF Data Portal November 25, 2007:
- Comisión nacional para el conocimiento y uso de la biodiversidad, Herbario del Instituto de EcologÃa, A.C., México
- Herbarium of the University of Aarhus, The AAU Herbarium Database
- Instituto Nacional de Biodiversidad
- , Biodiversidad de Costa Rica
- Missouri Botanical Garden, Missouri Botanical Garden
- USDA PLANTS, USDA PLANTS Database
Identifiers
- Biodiversity Heritage Library NamebankID: 2658831
- Catalogue of Life Accepted Name Code: ITS-37819
- Global Biodiversity Information Facility Taxonkey: 13749123
- Globally Unique Identifier: urn:lsid:ipni.org:names:228400-1
- GRIN Nomen Number: 316901
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 37819
- U.S.D.A. Plant Symbol: NOMO
- Zipcode Zoo Species Identifier: 45172
