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Vascular Plants of California
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Agave shawii var. shawii
SHAW AGAVE


Higher Taxonomy
Family: AgavaceaeView DescriptionDichotomous Key
Common Name: CENTURY PLANT FAMILY
Habit: Perennial herb, shrub, tree, fibrous succulent or not, from bulbs or rhizomes. Stem: above ground or not, branched or not. Leaf: simple, deciduous or not, basal or in terminal rosettes, generally sessile, linear, lanceolate, oblanceolate or ovate, fibrous or not, thin and flexible or thick and rigid or succulent; margin entire, fine-serrate, dentate, or with filaments, tips rigid or flexible, with a spine or not. Flower: bisexual; perianth parts 6, in 2 petal-like whorls, free or +- fused; stamens 6, +- fused to perianth, filaments often wide, succulent; ovary superior or inferior, chambers 3, style 1 (thick, poorly defined), stigma head-like or 3-lobed. Fruit: capsule, indehiscent, loculicidal, or septicidal. Seed: few to many, +- flat or ovoid, generally black.
Genera In Family: 24 genera, 637 species: worldwide.
eFlora Treatment Author: Dale W. McNeal, except as noted
Scientific Editor: Dale W. McNeal, Thomas J. Rosatti, Bruce G. Baldwin.
Genus: AgaveView DescriptionDichotomous Key


Common Name: CENTURY PLANT
Habit: Shrub-like, stem often short, forming basal rosettes, scapose, often rhizomed, generally dying after flowering. Leaf: long-lived, sessile, lance-linear to ovate, thick, generally rigid, often fleshy, glabrous, armed with marginal teeth, spine at tip. Inflorescence: panicle-, raceme-, or spike-like, bracted, often with bulblets. Flower: [1] paired, or in clusters of 3--40; perianth generally funnel- or bell-shaped, yellow to green-yellow, parts petal-like, 6 in 2 whorls, fused basally, lobes erect to ascending or +- spreading distally; stamens 6; ovary inferior, 3-chambered. Fruit: oblong to ovoid, often beaked, loculicidal. Seed: many, +- flat, black.
Etymology: (Greek: noble, for imposing stature)
Unabridged Note: Cultivated material may be identified using Gentry 1982 Agaves of Continental N. America. Univ. Arizona Press.
eFlora Treatment Author: James L. Reveal
Reference: Reveal & Hodgson 2002 FNANM 26:442--461
Agave shawii Engelm. var. shawii
NATIVE
Habit: Stem 0.5--2 m; rosette 1, 0.8--20 dm. Leaf: 20--50 cm, narrow-ovate, marginal teeth 5--6 mm, 1--2(5) cm apart, tip-spine 2--4 cm. Inflorescence: panicle-like, 2--4 m including peduncle; bracts 10--25 cm, lanceolate to triangular, persistent; branches generally 8--14, generally 10--20 cm; flowers 35--75[100] per cluster. Flower: yellow to +- red; perianth 6--10 cm, tube 12--19 mm, wide-funnel-shaped, lobes 17--40 mm, unequal; stamens long-exserted, filaments 4.3--7 cm, from middle of tube, yellow, anthers 20--35 mm; ovary 3--5 cm. Fruit: 5.5--7 cm. Seed: 4--7 mm.
Ecology: Coastal bluffs, historically nearby mesas, foothills; Elevation: < 100[< 300] m. Bioregional Distribution: s SCo (sw San Diego Co.); Distribution Outside California: Baja California. Flowering Time: Sep--May
Synonyms: Agave orcuttiana Trelease; Agave pachyacantha Trelease
Jepson eFlora Author: James L. Reveal
Reference: Reveal & Hodgson 2002 FNANM 26:442--461
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Agave deserti var. simplex
Next taxon: Agave utahensis

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Botanical illustration including Agave shawii var. shawii

botanical illustration including Agave shawii var. shawii

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Citation for this treatment: James L. Reveal 2012, Agave shawii var. shawii, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=82138, accessed on April 19, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 19, 2024.

Agave shawii  
var. shawii
click for enlargement
©2013 Keir Morse
Agave shawii  
var. shawii
click for enlargement
©2013 Keir Morse
Agave shawii  
var. shawii
click for enlargement
©2013 Keir Morse
Agave shawii  
var. shawii
click for enlargement
©2017 Keir Morse
Agave shawii  
var. shawii
click for enlargement
©2017 Keir Morse

More photos of Agave shawii var. shawii
in CalPhotos



Geographic subdivisions for Agave shawii var. shawii:
s SCo (sw San Diego Co.)
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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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).