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Mirabilis tenuiloba
SLENDER-LOBED FOUR O'CLOCK

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: MirabilisView DescriptionDichotomous Key

Common Name: FOUR O'CLOCK
Habit: Perennial herb, subshrub. Stem: repeatedly forked, decumbent to erect. Leaf: generally petioled. Inflorescence: branches ending in umbel-like cluster or solitary flowers; bracts 5(9), +- fused (or not) into calyx-like, bell- to saucer-shaped involucre; flowers in 1 involucre 1--16, generally not blooming together; flowers cleistogamous or not. Flower: radial or +- bilateral; perianth funnel- to bell-shaped, lobes 5; stamens 3--5, generally exserted; stigma +- spheric, generally exserted. Fruit: +- round to club-shaped; ribs or angles 0, 5, 10; wings 0.
Species In Genus: +- 60 species: America, Himalayas. Etymology: (Latin: wonderful) Note: Flowers open in evening, close in morning; species intergrade, taxonomy unsettled.

Mirabilis tenuiloba S. Watson
NATIVE
Stem: trailing to erect, < 5 dm, glandular-hairy. Leaf: ascending; blade 2.5--5 cm, narrowly to broadly triangular, glandular-hairy. Inflorescence: involucres +- densely clustered in upper axils, narrowly bell-shaped, spreading glandular-hairy, 1-flowered; bracts 5, 8--13 mm, lobes > tube, narrowly lanceolate. Flower: perianth 12--15 mm, funnel-shaped, +- white, lightly hairy. Fruit: +- 5 mm, ovoid, unmarked, black-brown, glabrous.
Ecology: Rocky slopes in desert scrub; Elevation: < 500 m. Bioregional Distribution: w DSon; Distribution Outside California: Baja California. Flowering Time: Mar--May
eFlora Treatment Author: Andy Murdock
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Mirabilis nyctaginea
Next taxon: Tripterocalyx

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Citation for this treatment: Andy Murdock 2016. Mirabilis tenuiloba, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33828, accessed on May 06, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 06, 2016.


Mirabilis tenuiloba
click for enlargement
© 2010 Michael Charters
Mirabilis tenuiloba
click for enlargement
© 2010 Michael Charters
Mirabilis tenuiloba
click for enlargement
© 2010 Michael Charters
Mirabilis tenuiloba
click for enlargement
© 2010 Michael Charters

More photos of Mirabilis tenuiloba in CalPhotos


Geographic subdivisions for Mirabilis tenuiloba:
w 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.