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Vascular Plants of California
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Drymocallis hansenii
YOSEMITE WOODBEAUTY


Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key
Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: DrymocallisView DescriptionDichotomous Key


Habit: Perennial herb, hairs short, simple, nonglandular and/or long, cross-walled, glandular. Stem: +- erect, from +- branched caudex or rhizomes. Leaf: basal and cauline, alternate, odd-1-pinnately compound; leaflets toothed, terminal generally >= lateral. Inflorescence: cyme, +- open; pedicels straight, bractlets 0. Flower: hypanthium +- shallow, bractlets 5; sepals +- triangular; petals < to > sepals, white to yellow; stamens generally 20--25, pollen sac 1, horseshoe-shaped; pistils many, styles fusiform, attached below fruit middle. Fruit: achene, glabrous. Chromosomes: n=7.
Species In Genus: 30 species: northern temperate. Etymology: (Greek: wood beauty) Note: Recognition based on morphological, molecular evidence. Drymocallis ashlandica (Green) Rydb. (inflorescence narrow, petioles glandular, petals yellow) in southwestern Oregon, possibly northwestern California.
Unabridged Note: Convergence of morphological, molecular evidence mandates recognition of Drymocallis; infrageneric taxonomy provisional. Key characters include relative proportions of 2 hair types: short simple nonglandular hairs and longer cross-walled glandular hairs.
eFlora Treatment Author: Barbara Ertter
Reference: Ertter 2007 J Bot Res Inst Texas 1:31--46
Drymocallis hansenii (Greene) Rydb.
NATIVE
Stem: generally 1, 30--90 cm, glandular hairs abundant at base. Leaf: basal generally 10--25 cm, sheathing base generally glabrous, lateral leaflet pairs 3--4, terminal leaflet generally 20--50 mm, widely obovate, rounded, teeth single to double, 6--11 per side. Inflorescence: not leafy, narrow, branch angle generally 10--30°; pedicels generally 1--10 mm, lowermost to 20 mm, glandular hairs and short nonglandular hairs abundant. Flower: opening widely; hypanthium bractlets 2--4 mm, 0.5--1 mm wide, linear to narrow-elliptic; sepals 4--8 mm, acute; petals spreading, 4--7 mm, >= sepals, widely obovate, cream; styles +- 1 mm. Fruit: < 1 mm, light brown.
Ecology: Moist meadows; Elevation: 1200--2200 m. Bioregional Distribution: CaR, SN. Flowering Time: Jun--Sep Note: Coarser plants from Wrn probably undescribed taxon. Intergrades with Drymocallis lactea at higher elevation.
Synonyms: Potentilla glandulosa subsp. hansenii (Greene) D.D. Keck
Unabridged Note: Similar to Drymocallis convallaria (Rydb.) Rydb. (Alaska to Oregon, Montana, Utah) with tall, generally single stem 2--4 mm diam; comparable but coarser plants from Wrn probably undescribed. Intergrades with Drymocallis lactea at higher elevation.
Jepson eFlora Author: Barbara Ertter
Reference: Ertter 2007 J Bot Res Inst Texas 1:31--46
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Citation for this treatment: Barbara Ertter 2012, Drymocallis hansenii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=82056, accessed on October 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on October 18, 2019.

Drymocallis hansenii
click for enlargement
© 2009 Barry Breckling
Drymocallis hansenii
click for enlargement
© 2009 Barry Breckling
Drymocallis hansenii
click for enlargement
© 2009 Barry Breckling

More photos of Drymocallis hansenii in CalPhotos



Geographic subdivisions for Drymocallis hansenii:
CaR, SN.
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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.