Difference between revisions of "Helianthemum nummularium subsp. obscurum"

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(Created page with '{{Inc| Helianthemum chamaecistus, Mill. (H. vulgare, Gartn. H. variabile, Spach). Fig. 1793. Low procumbent sub- shrub, rarely upright: lvs. petioled, usually flat, ovate to line…')
 
 
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{{SPlantbox
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|familia=Asteraceae
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|genus=Helianthemum
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|species=nummularium
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|subspecies=obscurum
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|habit=shrub
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|Min ht metric=cm
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|Temp Metric=°F
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|image=Upload.png
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|image_width=240
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}}
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Describe the plant here...
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Helianthemum chamaecistus, Mill. (H. vulgare, Gartn. H. variabile, Spach). Fig. 1793. Low procumbent sub- shrub, rarely upright: lvs. petioled, usually flat, ovate to linear-lanceolate, green on both sides, hairy or nearly glabrous, ½ -1 ½ in. long: stipules lanceolate: fls. normally yellow, about 1 in. across, in many-fld loose racemes; outer sepals much shorter than the inner broadly oval ones. Eu., W. Asia., N. Afr. L.B.C. 3:202. R.F.G. 3:30 (4547, as var. concolor). G.W.H. 111.— This is an exceedingly variable species and numerous forms are cult, in European gardens; the following are perhaps the most noteworthy: Var. grandiflorum, Fiek (H. grandiflorum, Lam.). Lvs. ovate to oblong, green on both sides: fls. yellow,1 ¼ in. long. Var. cupreum, Grosser (H. hyssopifolium var. cupreum, Sweet). Lvs. oval to lanceolate, green on both sides: fls. copper- colored, darker toward the base, 1 ¼ - 1 1/3 in. across. S.C. 58. Var. tomentosum, Grosser (H. tomentosum, Dun. H. angustifolium, Pers. H. polifolium, Hort.). Lvs. oblong to oblong-lanceolate, flat or revolute at the margin, white-tomentose beneath, ¼ - ¾ in. long: fls. yellow. S.E.B. 2:158 and S.C. 34 (as H. vulgare). R.F.G. 3:30 (4547, as var. discolor). There is a double- fid, form, var. tomentosum multiplex, Grosser. S.C. 64. Var. roseum, Grosser (H. roseum. Sweet). Lvs. lanceolate, white-tomentose beneath: fls. pink, 1 ¼ in. across. A form with semi-double fls. is var. roseum. multiplex. S.C. 86. Var. venustum, Grosser. Lvs. lanceolate, revolute, white-tomentose beneath: fls. crimson with yellow eye, over 1 in. across. S. C. 10. Var. mutabile, Grosser. Lvs. ovate-oblong, flat, grayish tomentose beneath: fls. at first light rose, changing to lilac, finally nearly white. S.C. 106. R.F.G. 3:35 (4556). Var. stramineum, Grosser. Lvs. oval to oblong-lanceolate, flat, white-tomentose below: fls. bright straw-yellow, over 1 in. across. S.C. 93. There is a double-fld. form, var. stramineum multiplex. S.C. 94. Var. diversifolium, Grosser. Lvs. oval to oblong- or linear-lanceolate, white-tomentose beneath: fls. purplish pink, the petals with a darker copper-colored blotch at the base. S.C. 95. A double-fld. form with purplish red fls. is var. diversifolium multiplex. S. C. 98. Var. macranthum, Grosser. Lvs. ovate-oblong, rather large, thinly grayish tomentose beneath: fls. white, nearly 1 1 ¾ in. across, the petals blotched yellow at the base. S.C. 103. There is a form with very double fls., var. macranthum multiplex. S.C. 104.
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Helianthemum chamaecistus, Mill. (H. vulgare, Gartn. H. variabile, Spach). Low procumbent sub- shrub, rarely upright: lvs. petioled, usually flat, ovate to linear-lanceolate, green on both sides, hairy or nearly glabrous, ½ -1 ½ in. long: stipules lanceolate: fls. normally yellow, about 1 in. across, in many-fld loose racemes; outer sepals much shorter than the inner broadly oval ones. Eu., W. Asia., N. Afr.— This is an exceedingly variable species and numerous forms are cult, in European gardens; the following are perhaps the most noteworthy: Var. grandiflorum, Fiek (H. grandiflorum, Lam.). Lvs. ovate to oblong, green on both sides: fls. yellow,1 ¼ in. long. Var. cupreum, Grosser (H. hyssopifolium var. cupreum, Sweet). Lvs. oval to lanceolate, green on both sides: fls. copper- colored, darker toward the base, 1 ¼ - 1 1/3 in. across. Var. tomentosum, Grosser (H. tomentosum, Dun. H. angustifolium, Pers. H. polifolium, Hort.). Lvs. oblong to oblong-lanceolate, flat or revolute at the margin, white-tomentose beneath, ¼ - ¾ in. long: fls. yellow. There is a double- flowered form, var. tomentosum multiplex. Var. roseum, Grosser (H. roseum. Sweet). Lvs. lanceolate, white-tomentose beneath: fls. pink, 1 ¼ in. across. A form with semi-double fls. is var. roseum. multiplex.Var. venustum, Grosser. Lvs. lanceolate, revolute, white-tomentose beneath: fls. crimson with yellow eye, over 1 in. across. Var. mutabile, Grosser. Lvs. ovate-oblong, flat, grayish tomentose beneath: fls. at first light rose, changing to lilac, finally nearly white. Var. stramineum, Grosser. Lvs. oval to oblong-lanceolate, flat, white-tomentose below: fls. bright straw-yellow, over 1 in. across. There is a double-fld. form, var. stramineum multiplex. Var. diversifolium, Grosser. Lvs. oval to oblong- or linear-lanceolate, white-tomentose beneath: fls. purplish pink, the petals with a darker copper-colored blotch at the base. A double-fld. form with purplish red fls. is var. diversifolium multiplex. Var. macranthum, Grosser. Lvs. ovate-oblong, rather large, thinly grayish tomentose beneath: fls. white, nearly 1 1 ¾ in. across, the petals blotched yellow at the base. There is a form with very double fls., var. macranthum multiplex.
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==Cultivation==
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===Propagation===
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===Pests and diseases===
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==Species==
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==Gallery==
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{{photo-sources}}<!-- remove this line if there are already 3 or more photos in the gallery  -->
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<gallery>
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Image:Upload.png| photo 1
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Image:Upload.png| photo 2
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Image:Upload.png| photo 3
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</gallery>
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==References==
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
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<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
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<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
  
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==External links==
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*{{wplink}}
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{{stub}}
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__NOTOC__

Latest revision as of 14:55, 20 October 2009


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Plant Characteristics
Habit   shrub
Cultivation
Scientific Names

Asteraceae >

Helianthemum >

nummularium >

obscurum >


Describe the plant here...


Read about Helianthemum nummularium subsp. obscurum in the Standard Cyclopedia of Horticulture 

Helianthemum chamaecistus, Mill. (H. vulgare, Gartn. H. variabile, Spach). Low procumbent sub- shrub, rarely upright: lvs. petioled, usually flat, ovate to linear-lanceolate, green on both sides, hairy or nearly glabrous, ½ -1 ½ in. long: stipules lanceolate: fls. normally yellow, about 1 in. across, in many-fld loose racemes; outer sepals much shorter than the inner broadly oval ones. Eu., W. Asia., N. Afr.— This is an exceedingly variable species and numerous forms are cult, in European gardens; the following are perhaps the most noteworthy: Var. grandiflorum, Fiek (H. grandiflorum, Lam.). Lvs. ovate to oblong, green on both sides: fls. yellow,1 ¼ in. long. Var. cupreum, Grosser (H. hyssopifolium var. cupreum, Sweet). Lvs. oval to lanceolate, green on both sides: fls. copper- colored, darker toward the base, 1 ¼ - 1 1/3 in. across. Var. tomentosum, Grosser (H. tomentosum, Dun. H. angustifolium, Pers. H. polifolium, Hort.). Lvs. oblong to oblong-lanceolate, flat or revolute at the margin, white-tomentose beneath, ¼ - ¾ in. long: fls. yellow. There is a double- flowered form, var. tomentosum multiplex. Var. roseum, Grosser (H. roseum. Sweet). Lvs. lanceolate, white-tomentose beneath: fls. pink, 1 ¼ in. across. A form with semi-double fls. is var. roseum. multiplex.Var. venustum, Grosser. Lvs. lanceolate, revolute, white-tomentose beneath: fls. crimson with yellow eye, over 1 in. across. Var. mutabile, Grosser. Lvs. ovate-oblong, flat, grayish tomentose beneath: fls. at first light rose, changing to lilac, finally nearly white. Var. stramineum, Grosser. Lvs. oval to oblong-lanceolate, flat, white-tomentose below: fls. bright straw-yellow, over 1 in. across. There is a double-fld. form, var. stramineum multiplex. Var. diversifolium, Grosser. Lvs. oval to oblong- or linear-lanceolate, white-tomentose beneath: fls. purplish pink, the petals with a darker copper-colored blotch at the base. A double-fld. form with purplish red fls. is var. diversifolium multiplex. Var. macranthum, Grosser. Lvs. ovate-oblong, rather large, thinly grayish tomentose beneath: fls. white, nearly 1 1 ¾ in. across, the petals blotched yellow at the base. There is a form with very double fls., var. macranthum multiplex.


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

Propagation

Pests and diseases

Species

Gallery

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References

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