Common Names in English:
Clasping Twisted Stalk, Clasping Twistedstalk, Clasping-Leaved Twisted-Stalk, Claspleaf Twistedstalk, Scoot Berry, Twisted Stalk, Watermelon Berry, White Mandarin, Wild Cucumber
, with a rhizome, bulb, or corm, rarely shrubby or treelike. Leaves basal and/or cauline, alternate, opposite, or whorled
, parallel or rarely reticulate
veined. Inflorescence a raceme
, panicle, spike, umbel, reduced panicle, or other, or flowers solitary. Flowers bisexual
, rarely unisexual
, rarely zygomorphic; bracts present or absent; bracteoles present or absent. Perianth usually corollalike, 6-merous, rarely 4- or 8-merous, in 2 whorls; segments free
(tepals) or united
. Stamens 6, rarely 3, 4, or 8, inserted
opposite perianth segments; filaments
free or adnate
to perianth, rarely connate
into a corona
usually 2-loculed, basifixed
and versatile, introrse
, or extrorse
, dehiscing usually by vertical
slits. Carpels usually connate for most or all of their length
, rarely only at base
; ovary superior, rarely semi-inferior, 3-loculed, rarely 2- or 4-loculed, with axile
placentae, or rarely 1-loculed with a parietal
placenta; ovules usually anatropous
. Nectaries septal, perigonal, or absent. Fruit a capsule or berry. Seeds with abundant endosperm and small embryo.
About 250 genera and 3500 species: worldwide, especially in temperate and subtropical regions; 57 genera (three endemic, two introduced ) and 726 species (379 endemic, 11 introduced) in China.
. Stems simple
to highly branched. Leaves numerous
, sessile; blade
to cordate-clasping, apex acute to acuminate. Inflorescences 1-2-flowered, peduncle slender, adnate
to stem for 1 internode and arising opposite next leaf axil
, junction with pedicel abrupt
or not, entire structure recurved. Flowers small, borne beneath
leaves; perianth rotate or campanulate
; tepals deciduous, erect
or recurved, distinct
, white to greenish yellow to rose, oblanceolate
; stamens hypogynous; filaments
short, broad, flat; anthers
, apex minutely apiculate
or with tapering, setose
; ovary superior, 3-locular; style slender to bulbous; stigma unlobed or 3-lobed; pedicel geniculate. Fruits baccate
, orangish to dark red, ellipsoid
. Seeds pale
Species 7: n temperate North America and Eurasia .
Species Streptopus amplexifolius
from thick rhizomes. Stems freely branched, stout, 5-12 dm,
often with reddish hairs
basally, nodes not fringed
. Leaves 5-15
× 2.5-6 cm; blade
ovate-oblong to oblong-lanceolate, base
apex acuminate; peduncle: junction with pedicel abrupt
, with glands
indicating transition, entire structure 2-5 cm, glands short-stalked.
Flowers 1-2 per axil; perianth campanulate
; tepals spreading
, white to greenish yellow, narrowly oblong-lanceolate, 9-15
mm; stamens unequal, outer shorter, 0.8-1 mm, inner 2-3 mm; anthers
lanceolate, 3-3.5 mm, apex 1-pointed; style stout, 4-5 mm; stigma
fused from base to tip, unlobed; combined peduncles and pedicels
recurved, 2-5 cm, short-stalked glands indicating transition; pedicel
whitish green maturing to yellowish
orange or red, ellipsoid
, 10-12 mm.
Seeds 2.5-3 mm. 2n = 16, 32.
Several poorly defined races described by N. C. Fassett (1935) as varieties based chiefly on minute difference in leaf-margin serration are not here recognized. [source]
Flowers: Bloom Period: April, May, June. • Flower Color: yellow
Size: 12-18" tall.
Typically found at an altitude of 0 to 3,632 meters (0 to 11,916 feet).
Culture: Space 9-12" apart.
Sunlight: Sun Exposure: Partial to Full Shade.
Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b. (map)
- Whittaker & Margulis,1978
- Haeckel, 1866
- Cavalier-Smith, 1981
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Kenrick & Crane, 1997
- Brongniart, 1843
- Takhtajan, 1967
- Takhtajan, 1967
- Perleb, 1826
- Family: Liliaceae () - A.L. de Jussieu, 1789, nom. cons. - Lily Family
- Order: Liliales () - Perleb, 1826
- Superorder: Lilianae () - Takhtajan, 1967
- Subclass: Liliidae () - Takhtajan, 1967
- Class: Spermatopsida () - Brongniart, 1843
- Infraphylum: Radiatopses () - Kenrick & Crane, 1997
- Subphylum: Euphyllophytina ()
- Phylum: Tracheophyta () - Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae () - Cavalier-Smith, 1981
- Kingdom: Plantae () - Haeckel, 1866 - Plants
S. amplexifolius var. americanus Schultes • S. amplexifolius var. chalazatus Fassett; S. Amplexifolius Var. Denticulatus Fassett • S. amplexifolius var. grandiflorus Fassett • S. fassettii & Aacute;. Löve & D. Löve • Streptopus amplexifolius americanus (Schultes) á. löve & D. Löve • Tortipes amplexifolius (Linnaeus) Small • Uvularia amplexifolia L. • Uvularia amplexifolia Linnaeus
Publishing author : DC. Publication : Fl. Franc. (DC. & Lamarck), ed. 3. 3: 174 1805
Members of the genus Streptopus
ZipcodeZoo has pages for 18 species, subspecies, varieties, forms, and cultivars in this genus:
S. amplexifolius (Clasping Twisted Stalk) · S. amplexifolius (L.) DC. var. chalazatus Fassett (Tubercle Twistedstalk) · S. amplexifolius var. amplexifolius (Claspleaf Twistedstalk) · S. amplexifolius var. chalazatus (Tubercle Twistedstalk) · S. amplexifolius var. papillatus (Claspleaf Twistedstalk) · S. lanceolatus (Rose Mandarin) · S. lanceolatus (Aiton) Reveal var. longipes (Fern.) Reveal (Twistedstalk) · S. lanceolatus var. curvipes (Twistedstalk) · S. lanceolatus var. lanceolatus (Twistedstalk) · S. lanceolatus var. longipes (Twistedstalk) · S. lanceolatus var. roseus (Twistedstalk) · S. longipes (Twistedstalk) · S. oreopolus (Twistedstalk) · S. roseus var. roseus (Rosy Twistedstalk) · S. streptopoides (Small Twistedstalk) · S. streptopoides var. brevipes (Small Twistedstalk) · S. × oreopolus (Twistedstalk) · S. oreopolus (Twistedstalk)
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Accessed through GBIF Data Portal November 28, 2007:
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- inatura - Erlebnis Naturschau Dornbirn, inatura - Erlebnis Naturschau Dornbirn
- Biodiversity Heritage Library NamebankID: 2662658
- Catalogue of Life Accepted Name Code: Kew-287538
- Global Biodiversity Information Facility Taxonkey: 2481187
- Globally Unique Identifier: urn:lsid:ipni.org:names:542061-1
- GRIN Nomen Number: 35779
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 43044
- International Plant Names Index (IPNI) ID: 1160363-1
- U.S.D.A. Plant Symbol: STAM2
- Zipcode Zoo Species Identifier: 64671
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- Mean = 853.900 meters (2,801.509 feet), Standard Deviation = 719.590 based on 784 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]