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Vascular Plants of California
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Verbascum bombyciferum
GIANT SILVER MULLEIN


Higher Taxonomy
Family: ScrophulariaceaeView DescriptionDichotomous Key
Common Name: FIGWORT FAMILY
Habit: Annual to tree, generally glandular, some +- aquatic. Stem: round to square in ×-section. Leaf: simple, generally alternate, generally +- entire; stipules generally 0 (present in Limosella). Inflorescence: spike to panicle (head-like), generally bracted, or flowers 1--4 in axils. Flower: generally bisexual; calyx lobes 4--5; corolla bilateral to radial, lobes 4--5; stamens epipetalous, 4--5[6--8], 5th a staminode in Scrophularia; pistil 1, ovary superior, chambers generally 2, placentas axile, style 1, stigma lobes generally 2. Fruit: capsule, generally +- ovoid, loculicidal or septicidal, or drupe-like.
Genera In Family: +- 65 genera, 1700 species: +- worldwide; some cultivated as ornamental (Verbascum). Note: Other taxa moved to Plantaginaceae (Antirrhinum, Bacopa, Collinsia, Cymbalaria, Digitalis, Dopatrium, Gambelia, Gratiola, Hebe, Holmgrenanthe, Keckiella, Kickxia, Limnophila, Linaria, Lindernia, Maurandella, Mohavea, Nothochelone, Penstemon, Pseudorontium, Stemodia, Synthyris, Tonella, Veronica), Orobanchaceae (Bellardia, Castilleja, Cordylanthus, Orthocarpus, Parentucellia, Pedicularis, Triphysaria), Phrymaceae (Diplacus, Erythranthe, Mimetanthe, Mimulus).
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: VerbascumView DescriptionDichotomous Key


Common Name: MULLEIN
Habit: [Annual] biennial, rosette large. Stem: erect, simple or branched just proximal to inflorescence. Leaf: basal and cauline, alternate, distal reduced. Inflorescence: raceme or panicle, bracted. Flower: calyx +- radial, deeply 5-lobed; corolla +- radial, +- rotate, 5-lobed; stamens 5, lower 2 filaments > upper 3, all or only upper hairy; stigma +- spheric. Fruit: capsule, septicidal. Seed: small, wingless, many.
Etymology: (Latin: from root for bearded)
eFlora Treatment Author: Robert E. Preston & Margriet Wetherwax
Reference: Donnelly et al. 1998 Amer J Bot 85:1618--1625
Verbascum bombyciferum Boiss.
NATURALIZED
Habit: Densely woolly. Stem: 50--150 cm, 0--few-branched. Leaf: basal with petiole 1--5 cm, blade to 40 cm, to 20 cm wide, ovate or obovate, +- crenate, tomentose; cauline reduced, distal sessile. Inflorescence: raceme, terminal, dense; flowers clustered, embedded in long-woolly hairs. Flower: calyx 6--10 mm, lobes lanceolate; corolla 20--30 mm, not glandular; upper 3 filaments white- or yellow-hairy, lower 2 glabrous distally. Fruit: 6--8 mm, ovoid.
Ecology: Dry streambed in oak woodland; Elevation: 140 m. Bioregional Distribution: NCoRO (1 record, Sonoma Co.); Distribution Outside California: native to Turkey. Flowering Time: Jun Note: In cultivation, doubtfully naturalized; plants occasionally misidentified as Verbascum olympicum Boiss.
Jepson eFlora Author: Robert E. Preston & Margriet Wetherwax
Reference: Donnelly et al. 1998 Amer J Bot 85:1618--1625
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Robert E. Preston & Margriet Wetherwax 2012, Verbascum bombyciferum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91790, accessed on April 23, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.

No expert verified images found for Verbascum bombyciferum.



Geographic subdivisions for Verbascum bombyciferum:
NCoRO (1 record, Sonoma Co.)
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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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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).