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Calochortus excavatus
INYO COUNTY STAR-TULIP

Higher Taxonomy
Family: LiliaceaeView DescriptionDichotomous Key

Common Name: LILY FAMILY
Habit: Perennial herb from membranous bulb or scaly rhizome. Stem: underground or erect, branched or not. Leaf: basal or cauline, alternate, subopposite, or whorled. Inflorescence: raceme, panicle, +- umbel-like or not. Flower: perianth parts 6 in 2 generally petal-like whorls, often showy; stamens 3 or 6, filaments free or +- fused to perianth, anthers attached at base or near middle; ovary superior or +- so, style 1, entire or 3-lobed. Fruit: capsule or berry. Seed: 3--many, flat or angled, brown to black.
Genera In Family: 16 genera, 635 species: northern temperate. Note: Users strongly encouraged to protect plants by working around need to see underground parts in using keys, e.g., by trying both leads in couplets solely dependent on such characters. Muscari botryoides (L.) Mill. an historical waif in California. Other TJM (1993) taxa moved to Agavaceae (Agave, Camassia, Chlorogalum, Hastingsia, Hesperocallis, Hesperoyucca, Leucocrinum, Yucca), Alliaceae (Allium, Ipheion, Nothoscordum), Amaryllidaceae (Amaryllis, Narcissus, Pancratium), Asparagaceae (Asparagus), Asphodelaceae (Aloe, Asphodelus, Kniphofia), Melanthiaceae (Pseudotrillium, Stenanthium, Toxicoscordion, Trillium, Veratrum, Xerophyllum), Nartheciaceae (Narthecium), Ruscaceae (Maianthemum, Nolina), Smilacaceae (Smilax), Tecophilaeaceae (Odontostomum), Themidaceae (Androstephium, Bloomeria, Brodiaea, Dichelostemma, Muilla, Triteleia), and Tofieldiaceae (Triantha). North American species of Disporum now in Prosartes.
eFlora Treatment Author: Dale W. McNeal, except as noted
Scientific Editor: Dale W. McNeal, Thomas J. Rosatti.
Genus: CalochortusView DescriptionDichotomous Key

Habit: Bulb coat generally membranous, occasionally fibrous. Stem: scapose or leafy, generally erect, generally branched, bulblets in axils of lower leaves or 0. Leaf: generally linear to lanceolate; basal leaf 1, persistent or not; cauline leaves 0--several, occasionally appearing basal, generally smaller upward, withering or not. Inflorescence: often +- umbel-like; flowers 2--many; bracts 0--several, generally opposite, often paired. Flower: perianth +- closed, spheric to oblong, or open, bell-shaped or +- rotate; sepals generally < petals, generally +- lanceolate (ovate), generally +- glabrous; petals generally widely wedge-shaped, occasionally clawed, generally hairy adaxially, nectary near base; stamens 6, filaments +- flat, often dilated at base, anthers generally attached at base or appearing so; style 1, stigmas 3. Fruit: capsule, septicidal; oblong or linear, generally 3-angled or -winged, chambers 3. Seed: many in 2 rows per chamber, flat, generally +- tan or +- yellow, translucent, or irregular dark brown, often net-like.
Species In Genus: +- 67 species: western North America, Central America; many cultivated. Etymology: (Greek: beautiful grass) Note: Bulbs of some eaten by Native Americans. Many taxa variable, difficult to key.
eFlora Treatment Author: Peggy L. Fiedler

Calochortus excavatus Greene
NATIVE
Stem: 10--30 cm, slender, simple, bulblets generally present. Leaf: basal 10--20 cm, generally persistent; cauline reduced upward. Inflorescence: +- umbel-like; flowers 1--6, erect; bracts paired, generally 3--8 cm. Flower: perianth widely bell-shaped; sepals 20--30 mm, lanceolate, generally not spotted; petals 30--40 mm, widely wedge-shaped, white, base marked dark purple, green-striped abaxially, sparsely short-hairy near nectary, nectary round, depressed, encircled by fringed membrane, densely short-branched-hairy; filaments 6--8 mm, anthers 7--10 mm, oblong, obtuse, red-brown. Fruit: erect, 5--8 cm, narrowly lanceolate, angled.
Ecology: Grassy meadows in shadscale scrub; Elevation: 1300--2000 m. Bioregional Distribution: sw SNE. Flowering Time: Apr--May Note: Threatened by groundwater development.
eFlora Treatment Author: Peggy L. Fiedler
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Calochortus elegans
Next taxon: Calochortus fimbriatus

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botanical illustration including Calochortus excavatus

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Citation for this treatment: Peggy L. Fiedler 2016. Calochortus excavatus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16727, accessed on August 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 28, 2016.


Calochortus excavatus
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© 2013 Steve Matson
Calochortus excavatus
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© 2008 Steve Matson
Calochortus excavatus
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© 2010 California Academy of Sciences
Calochortus excavatus
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© 2010 James M. Andre
Calochortus excavatus
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© 2004 California Academy of Sciences
Calochortus excavatus
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© 2008 Steve Matson

More photos of Calochortus excavatus in CalPhotos


Geographic subdivisions for Calochortus excavatus:
sw SNE.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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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CCH collections by month

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