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Vascular Plants of California
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Boerhavia coulteri var. palmeri


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)
eFlora Treatment Author: Andy Murdock
Reference: Spellenberg 2003 FNANM 4:17--28; Spellenberg 2012 Phytoneuron 2012-88: 1--2
Species: Boerhavia coulteriView Description 


Habit: Annual. Stem: decumbent to erect, < 8 dm, puberulent. Leaf: blade lanceolate to ovate-triangular, +- acute. Inflorescence: spike-like raceme; bracts << fruit, deciduous. Flower: < 2 mm; perianth pink to pale pink [white]. Fruit: glabrous; narrow, wrinkled between generally 5 wide ribs; tip rounded to truncate.
Note: Boerhavia coulteri var. coulteri discovered at edge of pavement of Interstate Highway 15 on dry bed of Ivanpah Lake on 12 September 2012, when fruit maturation well advanced compared to co-occurring var. palmeri (fruit maturation just beginning).
Boerhavia coulteri var. palmeri (S. Watson) Spellenb.
NATIVE
Stem: +- purple, decumbent to ascending. Flower: perianth pink. Fruit: well spaced or some overlapping 1--50% of their lengths, 2--2.4+ mm, tips generally rounded.
Ecology: gravelly hillsides, washes, arid grasslands; Elevation: 90--1540 m. Bioregional Distribution: ChI (possibly introduced), se DMoj (desert mtns and lower montane slopes), DSon; Distribution Outside California: to TX, Mexico. Flowering Time: Mid summer--early fall
Jepson eFlora Author: Andy Murdock
Reference: Spellenberg 2003 FNANM 4:17--28; Spellenberg 2012 Phytoneuron 2012-88: 1--2
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Boerhavia coulteri var. palmeri

botanical illustration including Boerhavia coulteri var. palmeri

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Citation for this treatment: Andy Murdock 2019, Boerhavia coulteri var. palmeri, in Jepson Flora Project (eds.) Jepson eFlora, Revision 7, /eflora/eflora_display.php?tid=81377, accessed on August 12, 2020.

Citation for the whole project: Jepson Flora Project (eds.) 2020, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on August 12, 2020.

Boerhavia coulteri var. palmeri
click for enlargement
© 2013 Neal Kramer
Boerhavia coulteri var. palmeri
click for enlargement
© 2013 Neal Kramer
Boerhavia coulteri var. palmeri
click for enlargement
© 2012 Keir Morse
Boerhavia coulteri var. palmeri
click for enlargement
© 2012 Keir Morse
Boerhavia coulteri var. palmeri
click for enlargement
© 2013 Neal Kramer
Boerhavia coulteri var. palmeri
click for enlargement
© 2012 Keir Morse

More photos of Boerhavia coulteri var. palmeri in CalPhotos



Geographic subdivisions for Boerhavia coulteri var. palmeri:
ChI (possibly introduced), se DMoj (desert mtns and lower montane slopes), DSon
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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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All markers link to CCH specimen records. The original determination is shown in the popup window.
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).