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Dipterostemon capitatus subsp. lacuna-vernalis
VERNAL POOL BLUE DICKS


Higher Taxonomy
Family: ThemidaceaeView DescriptionDichotomous Key
Common Name: BRODIAEA FAMILY
Habit: Perennial herb from corm, outer coat fibrous [membranous]; daughter corms formed at stem base above corm of previous year, cormlets formed at base of corms or on short stolons. Leaf: basal, 1--10, linear to narrow-lanceolate. Inflorescence: scapose, generally umbel-like; scape erect, generally 1(2), cylindric, generally rigid, occasionally wavy to twining; flower bracts 2--4[10], not enclosing flower buds. Flower: perianth parts 6 in 2 petal-like whorls, free or +- fused below into tube; staminodes 0 or 3; stamens 3 or 6, free or fused to perianth, occasionally appendaged; ovary superior, chambers 3, ovules 2--several per chamber. Fruit: capsule, loculicidal.
Genera In Family: 13 genera, 70--80 species: western North America.
eFlora Treatment Author: J. Chris Pires & Robert E. Preston, except as noted
Scientific Editor: Dale W. McNeal, Thomas J. Rosatti, Bruce G. Baldwin.
Genus: DipterostemonView DescriptionDichotomous Key

Habit: Cormlets sessile or on short stolons. Leaf: 2--5, generally keeled, entire, glabrous, occasionally withered by flowering. Inflorescence: few-flowered to dense; scape straight or +- curved; bracts +- papery; pedicels < to > flowers. Flower: perianth tube narrow-cylindric to short-bell-shaped, appendages 0; staminodes 0; stamens 6, unequal, 3 inner filaments with wing-like appendages, forming crown-like tube around anthers, anthers attached at base; style 1, stigma weakly 3-lobed. Fruit: generally sessile, generally ovoid, 3-angled. Seed: sharp-angled, black, finely striate.
Etymology: (Greek: two-winged stamens)
eFlora Treatment Author: Robert E. Preston & J. Chris Pires
Reference: Preston 2017 Phytoneuron 2017-15:1--11
Species: Dipterostemon capitatusView Description 


Common Name: BLUE DICKS
Leaf: 2--3, 10--70 cm, +- keeled. Inflorescence: scape (4.5)8.5--50(100) cm; bracts wide-lanceolate. Flower: perianth blue, blue-purple, pink-purple, or white, tube (2)3--8(10) mm, lobes generally ascending; 3 stamens opposite outer perianth parts with filaments (1)1.8--3.8(4) mm, anthers (1)1.7--3.1(4) mm, appendages 0; 3 stamens opposite inner perianth lobes with filaments (0.5)1--3(3.7) mm, anthers (2.4)2.9--5(6.2) mm, appendages (3)4--8(9) mm, erect, curved outward at tip, white; ovary (2)2.9--5.3(6.1) mm, style (2.5)3.2--8.5(9.5) mm.
Note: Morphologically and geographically distinct population groups indicate that additional subspecies warrant recognition; relationship between morphology and ploidy level needs study.
Dipterostemon capitatus (Benth.) Rydb. subsp. lacuna-vernalis (L.W. Lenz) R.E. Preston
NATIVE
Habit: Cormlets 0 to few. Inflorescence: scape 6--20(23) cm; pedicels < 4.5 mm, bracts 6--13 mm; flowers 1--3. Flower: perianth 10.5--16.5 mm; tube 2.5--4.5 mm; outer lobes 9--14 mm, 5--9.5 mm wide, ovate, cordate at base; inner lobes oblong, 7.5--12.5 mm, 4--8 mm wide; appendages 3.4--6 mm; ovary (2)2.5--4.5(5) mm; style (2.5)3--5(5.5) mm.
Ecology: Grassland, grassy openings in oak woodland; Elevation: 30--270 m. Bioregional Distribution: e GV, n SNF. Flowering Time: Feb--Apr Note: Populations of short-statured plants in NCoR that key to Dipterostemon capitatus subsp. lacuna-vernalis may warrant taxonomic recognition.
Synonyms: Dichelostemma lacuna-vernalis L.W. Lenz; Dichelostemma capitatum subsp. lacuna-vernalis (L.W. Lenz) D.W. Taylor
Jepson eFlora Author: Robert E. Preston & J. Chris Pires
Reference: Preston 2017 Phytoneuron 2017-15:1--11
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Robert E. Preston & J. Chris Pires 2019, Dipterostemon capitatus subsp. lacuna-vernalis, in Jepson Flora Project (eds.) Jepson eFlora, Revision 7, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=108596, accessed on April 18, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 18, 2024.

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Geographic subdivisions for Dipterostemon capitatus subsp. lacuna-vernalis:
e GV, n SNF.
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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).