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Boerhavia triquetra var. intermedia

Higher Taxonomy
Family: NyctaginaceaeView DescriptionDichotomous Key

Common Name: FOUR O'CLOCK FAMILY
Habit: Annual, perennial herb, subshrub, [shrub, tree], glabrous or hairy. Stem: often forked. Leaf: opposite, sessile or petioled, pairs generally unequal; blade generally entire. Inflorescence: generally forked; spike, head-like cluster, or umbel, flowers rarely 1, bracts forming a calyx-like involucre or not. Flower: bisexual, generally +- radial (bilateral), sometimes cleistogamous in some genera; perianth of 1 whorl, generally petal-like, bell- to trumpet-shaped, base hardened, tightly surrounding ovary in fruit, lobes 3--5, generally notched to +- lobed; stamens 1--many; ovary superior (appearing inferior due to hardened perianth base), style 1. Fruit: achene in hardened perianth base; round to +- flat; smooth, angled, ribbed, or winged; glabrous, hairy, or glandular.
Genera In Family: 30 genera, 350 species: warm regions, especially America; some ornamental (Bougainvillea; Mirabilis, four o'clock).
eFlora Treatment Author: Andy Murdock, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: BoerhaviaView DescriptionDichotomous Key

Common Name: SPIDERLING
Habit: Annual, perennial herb. Stem: prostrate to erect; internode often with sticky region. Leaf: petioled; blade 1--6 cm, paler beneath, often brown-dotted. Inflorescence: panicle-like, branches ending in umbel, spike-like raceme, or paired or solitary flowers; bracts 1--3, free, not forming involucre. Flower: closing by evening; perianth bell-shaped, tube < 5 mm, limb < 3 mm; stamens 1--5; stigma +- spheric, generally exserted. Fruit: < 4 mm, club-shaped; ribs 4--5; wings 0.
Species In Genus: +- 40 species: warm regions worldwide. Etymology: (H. Boerhaave, Dutch botanist, 1668--1738)

Boerhavia triquetra S. Watson var. intermedia (M.E. Jones) Spellenb.
NATIVE
Habit: Annual. Stem: ascending or erect, 2--5 dm; hairs fine, sparse. Leaf: blade broadly lanceolate or ovate, acute to obtuse. Inflorescence: generally umbel of 3--6(8) flowers or flowers 1 or paired. Flower: 1.5--2 mm; perianth pale pink to white. Fruit: 2--2.7 mm, glabrous, length 3 × width; ribs (3)5, rounded to angled; tip +- truncate to abruptly rounded.
Ecology: Gravelly washes, flats; Elevation: < 1300 m. Bioregional Distribution: e PR, e DMtns (Clark, Ivanpah mtns, Kingston Range), se DMoj exc DMtns, e DSon; Distribution Outside California: to Texas, Mexico. Flowering Time: Aug--Oct Note: In northern Mexico, less so in California, intergrading with Boerhavia triquetra S. Watson var. triquetra of Mexico; easily confused with Boerhavia erecta L. (fruit 3--4.5 mm), widespread in tropical America, expected as agricultural weed in California near Mexico.
Synonyms: Boerhavia intermedia M.E. Jones
Unabridged Note: In northern Mexico, less so in California, poorly distinguished from, intergrading with B. triquetra S. Watson var. triquetra of Mexico (flowers generally 1 or paired; fruit length 2 × width, ribs 3, rarely 4, sharp, tip truncate); easily confused with Boerhavia erecta L. (fruit 3--4.5 mm), widespread in tropical America, expected as agricultural weed in California near Mexico.
eFlora Treatment Author: Andy Murdock
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Previous taxon: Boerhavia diffusa
Next taxon: Boerhavia wrightii

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botanical illustration including Boerhavia triquetra var. intermedia

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Citation for this treatment: Andy Murdock 2016. Boerhavia triquetra var. intermedia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=85884, accessed on February 14, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 14, 2016.


Boerhavia triquetra var. intermedia
click for enlargement
© 2012 Keir Morse
Boerhavia triquetra var. intermedia
click for enlargement
© 2013 Neal Kramer
Boerhavia triquetra var. intermedia
click for enlargement
© 2012 Keir Morse
Boerhavia triquetra var. intermedia
click for enlargement
© 2013 Neal Kramer
Boerhavia triquetra var. intermedia
click for enlargement
© 2012 Keir Morse
Boerhavia triquetra var. intermedia
click for enlargement
© 2011 Neal Kramer

More photos of Boerhavia triquetra var. intermedia in CalPhotos


Geographic subdivisions for Boerhavia triquetra var. intermedia:
e PR, e DMtns (Clark, Ivanpah mtns, Kingston Range), se DMoj exc DMtns, e DSon;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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.