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Vascular Plants of California
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Yabea microcarpa


Higher Taxonomy
Family: Apiaceae (Umbelliferae)View DescriptionDichotomous Key
Common Name: CARROT FAMILY
Habit: Annual to perennial herb [shrub, tree], generally from taproot. Stem: generally +- scapose, generally ribbed, hollow. Leaf: basal and generally cauline, generally alternate; stipules generally 0; petiole base generally sheathing stem; blade generally much dissected, occasionally compound. Inflorescence: umbel or head, simple or compound, generally peduncled; bracts present in involucres or 0; bractlets generally present in "involucels". Flower: many, small, generally bisexual (or some staminate), generally radial (or outer bilateral); calyx 0 or lobes 5, small; petals 5, free, generally ovate or spoon-shaped, generally incurved at tips, generally +- ephemeral; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a +- conic, persistent projection or platform at tip subtending 2 free styles. Fruit: 2 dry, 1-seeded halves (= mericarps), separating from each other but generally +- persistent to central axis; ribs on halves 5, 2 marginal, 3 to back; oil tubes 1--several per interval between ribs.
Genera In Family: 300 genera, 3000 species: +- worldwide, especially temperate; many cultivated for food or spice (e.g., Carum, caraway; Daucus; Petroselinum); Bupleurum lancifolium Hornem. is historical garden weed; some toxic (e.g., Conium). Note: Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae, Orogenia moved to Lomatium, Sphenosciadium moved to Angelica. Petroselinum crispum (Mill.) A.W. Hill is a waif.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: YabeaView Description 



Species In Genus: 1 sp. Etymology: (Y. Yabe, Japanese botanist, 1876--1931)
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
Yabea microcarpa (Hook. & Arn.) Koso-Pol.
NATIVE
Habit: Annual, slender, +- hairy, taprooted. Stem: erect, 3--40 cm. Leaf: petiole 2.5--3.5 cm; blade 2--6 cm, oblong to ovate, pinnately dissected, segments 2--8 mm, thread-like to linear. Inflorescence: umbels generally compound; peduncle 2--10 cm; bracts 2--5, leaf-like, pinnately lobed to compound, 1--5 cm; bractlets 1--5, 1--10 mm, entire or some generally 3-lobed at tip or pinnately lobed; rays 1--9, 1--8 cm, unequal, erect or ascending; pedicels 2--9, < 15 mm, erect. Flower: minute, +- bilateral; calyx lobes evident; petals obovate, white, tips narrowed; styles short. Fruit: oblong, compressed side-to-side; 1° ribs bristly, alternate with prickly wings; oil tubes 1 per interval between 1° ribs; fruit axis divided in distal 1/4. Seed: face deeply grooved. Chromosomes: 2n=12.
Ecology: Grassy slopes, dunes, chaparral, woodland; Elevation: < 1500 m. Bioregional Distribution: CA-FP, DMoj; Distribution Outside California: to Washington, Idaho, Arizona, Baja California. Flowering Time: Apr--Jun
Synonyms: Caucalis microcarpa Hook. & Arn.
Jepson eFlora Author: Lincoln Constance & Margriet Wetherwax
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Botanical illustration including Yabea microcarpa

botanical illustration including Yabea microcarpa

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Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2012, Yabea microcarpa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=48745, accessed on October 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 18, 2019.

Yabea microcarpa
click for enlargement
© 2005 Keir Morse
Yabea microcarpa
click for enlargement
© 2011 Steve Matson
Yabea microcarpa
click for enlargement
© 2011 Steve Matson
Yabea microcarpa
click for enlargement
© 2011 Steve Matson
Yabea microcarpa
click for enlargement
© 2011 Steve Matson
Yabea microcarpa
click for enlargement
© 2008 Keir Morse

More photos of Yabea microcarpa in CalPhotos



Geographic subdivisions for Yabea microcarpa:
CA-FP, DMoj
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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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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.