Corispermum hyssopifolium

Linnaeus

Sp. Pl. 1: 4. 1753.

Common names: Hyssop-leaved bugseed
WeedyIntroducedIllustrated
Treatment appears in FNA Volume 4. Mentioned on page 313, 314, 316, 317.

Plants branched from base (rarely slightly above base), 10–35 (–55) cm, densely to sparsely covered with dendroid or stellate hairs, becoming glabrous. Leaf-blades linear-lanceolate or linear; usually plane,1.5–3.5 (–4) × 0.2–0.4 (–0.5) cm. Inflorescences compact, usually not strongly condensed at apex, occasionally interrupted near base, linear, oblong-linear, or indistinctly clavate-linear. Bracts ovate or ovatelanceolate (rarely narrowly ovatelanceolate to ± lanceolate), 0.5–1.5 (–2) × 0.3–0.7 cm. Perianth segments 1 (–3). Fruits brown, dark-brown, or deep olive green, usually without spots and warts, broadly elliptic, prominently convex abaxially, usually plane or slightly concave adaxially, obovate-elliptic, or ± orbiculate, broadest near middle (rarely slightly beyond middle), 2.2–3.2 (–3.5) × 1.7–2.8 mm shiny wing (when present) translucent at margins, 0.1 (–0.15) mm wide, margins entire, apex rounded.


Phenology: Flowering summer–early fall.
Habitat: Sandy waste places, roadsides, shores
Elevation: elevation not known

Distribution

V4 620-distribution-map.gif

Introduced; Colo., se Europe, w Asia

Discussion

In addition to the key characteristics, Corispermum hyssopifolium is distinguished by having style bases short, barely exposed over the edge of wing and fruit surfaces which are glabrous and shiny.

The application of the Linnaean name Corispermum hyssopifolium is problematic. The standing lectotype (C. E. Jarvis et al. 1993; I. C. Hedge 1997) and traditional circumscription of C. hyssopifolium (as understood by M. M. Iljin 1936; P. Aellen 1961, 1964; and many others) are accepted here.

No unquestionable specimens of Corispermum hyssopifolium sensu stricto are known from North America. A collection from Colorado and some collections from Missouri approach this species most closely (S. L. Mosyakin 1995). However, their fruit morphology suggests that they are either members of the native Asian and North American group centered around C. pallasii, or resulted from hybridization between C. hyssopifolium and native representatives of subsect. Pallasiana.

The name Corispermum hyssopifolium has been misapplied to the majority of species of the genus.

Selected References

None.

Lower Taxa

None.

"broadest" is not a number.

... more about "Corispermum hyssopifolium"
orbiculate +, elliptic +, obovate +, ovate +, lenticular +, , +, concave +, plane +  and convex to almost +
verrucose +
Sergei L. Mosyakin +
Linnaeus +
slippery +
aromatic +
small whitish +
convolute +, flat +, filiform +, linear +, linear-lanceolate +  and lanceolate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
persistent +  and deciduous +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
ovatelanceolate +  and ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
reddish-brown +, black +, brown +  and green +
Hyssop-leaved bugseed +
Colo. +, se Europe +  and w Asia +
elevation not known +
horseshoe--shaped +
symmetric +, or +  and uniseriate +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
olive green +, deep +, dark-brown +  and brown +
2.2mm;3.2mm +
orbiculate +, obovate-elliptic +, , +, concave +, plane +, convex +  and elliptic +
Sandy waste places, roadsides, shores +
interrupted +  and condensed +
clavate-linear +, oblong-linear +  and linear +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
wingless +  and winged +
erose-denticulate +, undulate +  and entire +
0.1;0.1mm;0.15mm +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
nonadherent +  and adherent +
accrescent +
papery +  and chartaceous +
Flowering summer–early fall. +
not accrescent +  and small +
pointing +  and ascending +
basal +, median +  and position +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
characteristic +
verrucate +  and striate +
rounded +  and flattened +
Weedy +, Introduced +  and Illustrated +
cylindric +
1 (?) +  and 3 (?) +
not armed +, not jointed +  and branched +
opposite +  and alternate +
ascending +  and erect +
not fleshy +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Corispermum hyssopifolium +
Corispermum +
species +
polygamous +, dioecious +  and monoecious +