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Vascular Plants of California
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Schizotechium jamesianum
TUBER STARWORT


Higher Taxonomy
Family: CaryophyllaceaeView DescriptionDichotomous Key
Common Name: PINK FAMILY
Habit: Annual to perennial herb; rarely dioecious (Silene), taprooted or rhizome generally slender. Leaf: simple, generally opposite (subwhorled), entire, pairs at nodes often +- connected at bases; stipules generally 0; petiole generally 0. Inflorescence: generally cyme, generally open; flowers 1--many; involucre generally 0 (present in most Dianthus, Petrorhagia). Flower: generally bisexual, radial; hypanthium often present but obscure; sepals (4)5, +- free or fused into a tube, margins generally scarious, more so on inner 2 or not, tube generally not scarious, awns generally 0; petals (4)5 or 0, generally tapered to base (or with claw long, limb expanded), entire to 2--several-lobed, limb generally without scale-like appendages adaxially, generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries 0 or 5; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2--5 with 0 branches or 1 with 2--3 branches. Fruit: capsule or utricle (rarely +- dehiscent), generally sessile. Seed: appendage generally 0 (present in Moehringia).
Genera In Family: +- 100 genera, 3000 species: widespread, especially arctic, alpine, temperate northern hemisphere; some cultivated (Agrostemma, Arenaria, Atocion, Cerastium, Dianthus, Gypsophila, Lychnis, Sagina, Saponaria, Silene). Note: Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5--8. Taxa of Minuartia in TJM2 treated here in Cherleria and Sabulina; Pseudostellaria in Hartmaniella and Schizotechium; Vaccaria in Gypsophila; Velezia in Dianthus.
eFlora Treatment Author: Ronald L. Hartman (deceased) & Richard K. Rabeler, except as noted
Scientific Editor: Bruce G. Baldwin & Thomas J. Rosatti.
Genus: SchizotechiumView Description 


Habit: Perennial herb, ascending to erect, rhizomed. Leaf: blade linear to +- lanceolate or elliptic; vein 1. Inflorescence: flowers many, in leafy cymes; pedicels glandular-hairy. Flower: hypanthium 0; sepals 5, free, 3--7 mm, lanceolate to +- ovate, glandular-hairy, margin scarious; petals 5, 5--9.5 mm, 2-lobed < 1/5 to base; stamens on ovary base, anthers purple; styles 3, 2--4.5 mm. Fruit: capsule, spheric; valves 6, +- 2--3 × recoiled. Seed: 1--2, red-brown to brown.
Etymology: (Greek: split wall, possibly for the capsule)
eFlora Treatment Author: Richard K. Rabeler
Reference: Hartman & Rabeler 2005 FNANM 5:114--116; Arabi et al. 2022 Taxon 71:608--629
Unabridged Reference: Weber & Hartman 1979 Phytologia 44:313--314; Rabeler & Hartman 2002 Novon 12:82--86
Schizotechium jamesianum (Torr.) Arabi, Rabeler & Zarre
NATIVE
Habit: Plant 12--45 cm, glandular-hairy, at least above; rhizomes with spheric to elongate, tuber-like thickenings 3--12 mm diam. Stem: simple to much-branched, 4-angled. Leaf: 15--150 mm, +- smaller above, thick; margin +- smooth to roughened. Inflorescence: pedicels in fruit recurved to reflexed from base. Seed: 2--3.4 mm. Chromosomes: 2n=96.
Ecology: Meadows, sagebrush-grassland, dry understory of conifer forest; Elevation: 1400--2700 m. Bioregional Distribution: KR, NCoRH, CaRH, SN (exc n SNF), WTR, MP; Distribution Outside California: to Washington, Montana, Colorado, Texas. Flowering Time: Summer
Synonyms: Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartm.; Stellaria jamesiana Torr.
Jepson eFlora Author: Richard K. Rabeler
Reference: Hartman & Rabeler 2005 FNANM 5:114--116; Arabi et al. 2022 Taxon 71:608--629
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Citation for this treatment: Richard K. Rabeler 2022, Schizotechium jamesianum, in Jepson Flora Project (eds.) Jepson eFlora, Revision 11, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=85152, accessed on February 08, 2023.

Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on February 08, 2023.

Pseudostellaria jamesiana
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© 2012 Barry Rice
Pseudostellaria jamesiana
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© 2009 Barry Breckling
Pseudostellaria jamesiana
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© 2022 Neal Kramer
Pseudostellaria jamesiana
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© 2011 Steve Matson
Pseudostellaria jamesiana
click for enlargement
© 2011 Steve Matson
Pseudostellaria jamesiana
click for enlargement
© 2009 Barry Breckling

More photos of Pseudostellaria jamesiana in CalPhotos



Geographic subdivisions for Schizotechium jamesianum:
KR, NCoRH, CaRH, SN (exc n SNF), WTR, MP
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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).