Gilia capitata

From Puget Prairie Plants
  • Scientific Name: Gilia capitata
  • Family: Polemoniaceae
  • Common Names: bluehead gilia, globe gilia
  • Codon: GILCAP

Photo by Ben Legler, 2004 also featured on Main Page

Taxonomy

Scientific classification
Kingdom: Plantae
Subkingdom: Viridiplantae
Phylum: Tracheophyta
Subphylum: Tracheophytina
Class: Magnoliopsida
Subclass: Asteranae
Order: Ericales
Family: Polemoniaceae
Genus: Gilia Ruiz & Pav.
Species: Gilia capitata Sims

[1]

Description

Annual herb from a taproot.[2]

Leaves pinnately lobed, segments and rachis slender, reduced upwards on stem.[2] Leaf axils and midribs generally hairy.[3]

Inflorescence terminal, spheric, consisting of many unstalked flowers, generally more than 8 per head, corolla bluish.[2] Corolla lobes 5, generally about as long as the corolla tube. 5 sepals, membranes white, expanded during fruiting.[3] Stamens equal as long as or slightly exserted from corolla lobes.[2]

Fruits are 3-chambered capsules, each bearing 1-3 seeds.[3]


Bloom Period

May, June, July[4]


Distribution

Mostly west Cascades, southern BC to California occasionally east to western Idaho.[2]


Habitat

Found in open places below 7,000 ft. elevation. West-side forest, meadow, and east-side forest. Grows in open, sandy, or rocky soils, and grassy hillsides.[5]


Uses

Payómkawichum use of seeds as food.[6]

Rich nectar source.


Propagation

Seeds do not require pre-treatment but germination improved by the presence of charred wood or aqueous extracts of it.[5]


Seed

Seed sample from: 2011

Average Measurement: 1.7 x 1.1 x 0.7

Measurement Range: L: 1.2 – 2, W: 0.75 – 1.4, D: 0.5 – 1.1

Features

Photo by Lisa Hintz

Shape: Seed narrow at hilium end, broadening at opposite apex. Hilium inconspicuous. Uniformity in shape is not that common, but most seeds take a relatively teardrop shaped.

Color: Seed is brown, very bumpy, and slightly lustrous.

Surface: Seed coat becomes very mucilaginous and stringy when wet.

Could be confused with COGRX, but GICA is about ½ the size and does not have sulcus.

Latitudinal Cross Section: elliptical GICA lat.png

Longitudinal Cross Section: obovate GICA long.png

Basic Explanations and Assumptions:

The dimensions for the seeds are length x width x depth. The location of the hilum is used as the base of the seed, and the length is measured from hilum to the opposite apex. Where a style is present, the length is measured from the hilum to the bottom of the style. Width is measured at a right angle to the length at the widest part. Depth is measured at a right angle to the intersection of height and width lines.

Measurements included are the mean average for each measurement of ten separate seeds.

All measurements in millimeters unless otherwise noted.


Photo Gallery

References


  1. Integrated Taxonomic Information System. Retrieved from https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=31107
  2. 2.0 2.1 2.2 2.3 2.4 Hitchcock, C. L., Cronquist, A., Giblin, D., & Legler, B. et al. (2018). Flora of the Pacific Northwest: an illustrated manual. Seattle: University of Washington Press.
  3. 3.0 3.1 3.2 Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2020-06-08 12:03:17 PM ]
  4. WTU Herbarium, Burke Museum, & University of Washington. Retrieved from https://biology.burke.washington.edu/herbarium/imagecollection/photo.php?Photo=wtu057502&Taxon=Gilia%20capitata&SourcePage=taxon
  5. 5.0 5.1 Middleton, Kelsey G. (2011, May 19). Plant Propagation Protocol for Gilia capitiata. UW Courses: ESRM 412 – Native Plant Production.
  6. Sparkman, Philip S., 1908, The Culture of the Luiseno Indians, University of California Publications in American Archaeology and Ethnology 8(4):187-234, page 230. Retrieved from http://naeb.brit.org/uses/search/?string=gilia+capitata