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Vascular Plants of California
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Cuscuta obtusiflora var. glandulosa


Higher Taxonomy
Family: ConvolvulaceaeView DescriptionDichotomous Key
Common Name: MORNING-GLORY FAMILY
Habit: Annual, perennial herb, subshrub, generally twining or trailing. Leaf: 0 or alternate. Inflorescence: cyme or flowers 1 in axils; bracts subtending flowers 0 or 2. Flower: bisexual, radial; sepals (4)5, +- free, overlapping, persistent, often unequal; corolla generally showy, generally bell-shaped, +- shallowly 5-lobed, generally pleated and twisted in bud; stamens 5, epipetalous; pistil 1, ovary superior, chambers generally 2, each generally 2-ovuled, styles 1--2. Fruit: generally capsule. Seed: 1--4(6).
Genera In Family: 55--60 genera, 1600--1700 species: warm temperate to tropics; some cultivated for food or as ornamental (Ipomoea). Note: Monophyletic only if Cuscutaceae included, as treated here. Ipomoea cairica (L.) Sweet, Ipomoea hederacea Jacq. [Ipomoea nil L., misappl.], Ipomoea indica (Burm.) Merr. (including Ipomoea mutabilis Ker Gawl.), Ipomoea purpurea (L.) Roth, Ipomoea triloba L., all included in TJM (1993), not naturalized.
eFlora Treatment Author: Robert E. Preston, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: CuscutaView DescriptionDichotomous Key


Common Name: DODDER
Habit: Vine, annual (perennial herb if on perennial host), not in contact with ground, attached to, holoparasitic on host by many small, specialized roots (haustoria) along stem, generally glabrous. Stem: thread-like, +- green, yellow, orange, or +- red. Leaf: 0 or scale-like, alternate, +- 2 mm. Inflorescence: generally cyme, head- to panicle-like (flowers 1), subtended by 0--3 bracts. Flower: bisexual, radial, parts generally in 4s or 5s; calyx generally divided 2/5--3/5, persistent, generally +- cream-white; corolla generally +- white, persistent (withered in fruit) or not, tube cup-shaped to cylindric, bulged or horizontally ridged below lobes or generally not, generally with scales subtending stamens, lobes alternate stamens, erect to reflexed; ovary superior, chambers 2, each 2-ovuled, styles 2, generally free, persistent, stigmas 2, generally spheric, persistent. Fruit: capsule, generally indehiscent to irregularly dehiscent (or circumscissile near base), spheric to ovoid, depressed or not, thickened and/or raised around generally inconspicuous opening between styles or not. Seed: 1--4; coat papillate when hydrated, honeycombed when dry, (rarely neither, with cells +- rectangular, in +- jigsaw-puzzle-like arrangement); embryo generally slender, 1--3-coiled.
Etymology: (Aramaic, Hebrew; from the verb K-S-Y (Kaph, Shin, Yodh), to cover, from habit) Note: By persistent, withered corolla, fruit may be "capped" (corolla on top of fruit), "surrounded" (fruit at least in part visible, corolla +- loosely around fruit), or "enclosed" (fruit not visible, corolla +- tightly around fruit). Cuscuta pentagona Engelm. excluded.
eFlora Treatment Author: Mihai Costea & Saša Stefanović
Reference: Costea & Stefanovic 2009 Syst Bot 34:570--579
Unabridged Reference: Costea et al. 2005 Brittonia 57:264--272; Costea et al. 2006 Sida 22:151--175, 177--195, 197--207, 209--225; Costea & Stefanovic 2009. Cuscuta jepsonii (Convolvulaceae), an invasive weed or an extinct endemic? Amer J Bot 96:1744--1750; Costea et al. 2009. Untangling the systematics of salt marsh dodders: Cuscuta pacifica a new segregate species from Cuscuta salina (Convolvulaceae). Syst Bot 34:787--795; Costea & Stefanovic. 2009. Molecular phylogeny of Cuscuta californica complex (Convolvulaceae) and a new species from New Mexico and Trans-Pecos. Syst Bot 34:570--579; Costea & Tardif 2006 Canad J Pl Sci 86:293--316
Cuscuta obtusiflora Kunth var. glandulosa Engelm.
NATIVE
Inflorescence: spike- or panicle-like, flowers 5--18; pedicels 0--1 mm. Flower: 1.8--2.5 mm, membranous, not papillate, parts in (4s)5s; calyx generally = corolla tube, shallowly cup-shaped, divided 1/2, not veined, not shiny, lobes ovate, bases +- overlapped, margins entire, tip obtuse; corolla tube 1--1.5 mm, bell-shaped, scales reaching stamen bases, oblong, rounded, fringed laterally, densely in apical 2/3, lobes erect to spreading, generally = tube, ovate to ovate-oblong, margins entire, tip obtuse, straight; filaments 0.4--0.6 mm, anthers exserted, 0.3--0.4 mm, ovate to widely elliptic; styles 0.4--1.1 mm, <= ovary. Fruit: 1.5--3 mm, 2.5--4 mm wide, depressed-spheric, not thickened or raised around opening between styles, not translucent, surrounded by corolla. Seed: generally 4, 1.4--1.6 mm, 1.2--1.35 mm wide, widely ovate to widely elliptic.
Ecology: On herbs including Alternanthera, Dalea, Lythrum, Polygonum, Xanthium; Elevation: +- < 500 m. Bioregional Distribution: Extirpated, formerly sporadically collected in San Bernardino Co., 1890--1898, Sonoma, Butte, Merced cos., 1940s; Distribution Outside California: eastern and southern United States, West Indies, Mexico. Flowering Time: Jul--Oct
Jepson eFlora Author: Mihai Costea & Saša Stefanović
Reference: Costea & Stefanovic 2009 Syst Bot 34:570--579
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Citation for this treatment: Mihai Costea & Saša Stefanović 2012, Cuscuta obtusiflora var. glandulosa, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=57201, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

No expert verified images found for Cuscuta obtusiflora var. glandulosa.



Geographic subdivisions for Cuscuta obtusiflora var. glandulosa:
Extirpated, formerly sporadically collected in San Bernardino Co., 1890--1898, Sonoma, Butte, Merced cos., 1940s
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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).





 

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).