Common Name: MADDER FAMILY Habit: Annual to tree, vine. Leaf: generally opposite (whorled), entire; stipules generally fused to stem, adjacent pairs occasionally fused, or occasionally leaf-like and appearing like whorled leaves. Inflorescence: cyme, panicle, spike, cluster, or flower 1, generally terminal and +- axillary. Flower: generally bisexual; calyx +- 4(5)-lobed, occasionally 0 (Galium, Crucianella) or 6 (Sherardia); corolla generally radial, 4(5)-lobed; stamens epipetalous, alternate corolla lobes, generally included; ovary generally inferior, chambers generally 2 or 4, style 1(2). Fruit: drupe, berry, or 2 or 4 nutlets [capsule]. Genera In Family: +- 500 genera, 6000 species: worldwide, especially tropics; many cultivated, including Coffea, coffee; Cinchona, quinine; many ornamental. Note:Diodia teres Walter doubtfully in California. eFlora Treatment Author: Robert E. Preston & Lauramay T. Dempster, except as noted Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Common Name: BUTTONWEED Habit: Annual. Leaf: opposite; stipules fused to leaf bases, small, fringed. Inflorescence: flowers 1--many in axils, sessile. Flower: corolla funnel-shaped, lobes generally 4. Fruit: nutlets 2; calyx persistent. Etymology: (Greek: thoroughfare, from habitats)
Diodia teres Walter
WAIF Stem: erect, branched or not, 7--25 cm, 4-angled. Leaf: 2.5 cm, lanceolate, tip sharp; stipule, blade base transparent, fringed, forming cup +- enclosing inflorescence. Flower: calyx lobes 4, stiff, unequal; corolla 3 mm, white or pink. Fruit: hairs stiff. Ecology: Dry mesas, slopes, often sandy; Elevation: 50 m. Bioregional Distribution: DSon (se Imperial Co.); Distribution Outside California: to eastern United States, Mexico. Flowering Time: Jun--Oct Note: Doubtfully in California, 1 1880 collection from Yuma, Arizona/California border. Synonyms: Diodia teres var. teres Jepson eFlora Author: Robert E. Preston & Lauramay T. Dempster Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Diodia Next taxon: Galium
Citation for this treatment: Robert E. Preston & Lauramay T. Dempster 2012, Diodia teres, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=23008, accessed on April 19, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 19, 2024.
Geographic subdivisions for Diodia teres:
DSon (se Imperial Co.)
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(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).
