Senecio rupestris Waldst. & Kit.

3197 (7). S. rupestris Waldst. & Kit., Descr. Icon. Pl. Hung. (1802) 136; S. squalidus L., Sp. Pl., ed. 1, 2 (1753) 869, p.p.; Chater & Walters, Fl. Eur. 4 (1976) 202, p.p.; S. rupestris var. rumelicus Form., Vierh. Natur. Ver. Brunn (1897) 218; Vandas, Rel. Form. (1909) 281; S. squalidus subsp. rupestris (Waldst. & Kit.) Greuter, Willdenowia 35 (2005) 238; Greuter, Med-Checklist 2 (2008) 719; S. nebrodensis auct. non L., Sp. Pl., ed. 2 (1763) 1217; Velen., Fl. Bulg. (1891) 253; Стоян., Стеф., Фл. Бълг., изд. 1, 2 (1925) 1145; Hayek, Prodr. Fl. Penins. Balc. 2(1931) 681- Скален спореж

Fam:   Asteraceae (Compositae)
Genus:   Senecio L.
Species: Senecio rupestris Waldst. & Kit.
English Name: Oxford ragwort

Description:

Annuals, biennials to perennials. Almost bare to weakly cobwebby fibrous plant. Stems single or several, 5 - 30 (60) cm high, erect or lying at the base, branched; the branches more or less spread out to the side. Leaves 1.5 - 10 cm long, 0.5 - 4 cm wide, back ovoid to elliptically oblong, glabrous above, usually cobwebby fibrous below; the lower ones are most often deeply pinnately endowed with rather distant sections, narrowing in the winged petiole, up to 4 cm long; the upper ones more or less feathery-like divided, stem-covering, with ears at the base; sometimes all the leaves only deeply serrated. Baskets in flowering 15 - 25 mm in diameter, several to many, collected in a loose, irregular thyroid inflorescence. The shell is 7 - 8 mm long, 5 - 8 mm wide, broadly cylindrical. Inflorescence petals 5 - 13, 2 - 2.5 mm long, 0.2 - 0.5 mm wide, lance, covering the shell up to about 1/3 of its length, glabrous or sparsely cobwebby fibrous, usually black on top and with a locks of hairs. Enveloping leaflets about 20 - 24, 7 - 8 mm long, about 1 mm wide, lance to narrowly triangular, glabrous, usually black on top and with a tuft of hairs. Tongue blossoms 10 - 14, 10 - 12 mm long, 2 - 3 mm wide, bright yellow. Fruits 2 - 3 mm long, cylindrical, brown, usually fibrous between the ribs. The kite 5 - 6 mm, white.

From:   „Флора на Н. Р. България”, том VI, БАН, София, (1976) „Флора на Република България”, том XI, БАН, Академично издателство „Проф. Марин Дринов”, София, (2013)

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Senecio rupestris Waldst. & Kit. is a synonym of Senecio squalidus subsp. rupestris (Waldst. & Kit.) Greuter

This name is a synonym of Senecio squalidus subsp. rupestris (Waldst. & Kit.) Greuter.
The record derives from TICA which reports it as a synonym (record 185E6681-BBF7-4245-A878-3AE29670ACCD) with original publication details: 136 .

From:   www.theplantlist.org › tpl › record › gcc-31781

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Senecio squalidus, known as Oxford ragwort,[6] is a flowering plant in the daisy family Asteraceae. It is a yellow-flowered herbaceous plant, native to mountainous, rocky or volcanic areas, that has managed to find other homes on man-made and natural piles of rocks, war-ruined neighborhoods and even on stone walls. These habitats resemble its well drained natural rocky homeland. The plants have spread via the wind, rail and the activities of botanists. The travels of this short-lived perennial, biennial, or winter annual make it a good subject for studies of the evolution and ecology of flowering plants.

Description

Like all members of the family Asteraceae, Senecio squalidus has a composite flower head known as a capitulum. What look like single flowers are actually a cluster of florets, each petal or ligule being a flower, or floret, possessing its own stamen and capable of producing the specialized seed of the family Asteraceae, the parachute-like achene.[7]
Oxford ragwort is a short-lived perennial, a biennial, or a winter annual and grows in a branched straggling form to between 1.5 feet (0.5 m) and 3.3 feet (1 m) depending on conditions. S. squalidus prefers dry, disturbed places, cultivated and waste ground, walls and railway banks.[3][8] It flowers from March[9] to December[8] and reproduces from seed.[3]
Leaves and stems
S. squalidus leaves are alternate, glossy, almost hairless and variable in form from deeply pinnately lobed to undivided with only the lower leaves being stalked. Stems and leaves resemble those of the common groundsel (Senecio vulgaris)[3][8] with the exception that their lobes are more widely spaced.[10]
Inflorescence
S. squalidus has larger capitula than Senecio jacobaea and a more spreading habit.[9] Yellow capitula of 10-14 petals in loose clusters. They are pollinated by insects. Ray corollas .3 inches (8 mm) to .6 inches (15 mm) long, .08 inches (2 mm) to .16 inches (4 mm) wide.[8]
Oxford ragwort is self-incompatible and needs pollen from other plants with different self-incompatibility alleles;[11]
[12] [13] its own flower possess a stigma with characteristics of both the “dry” and “wet” types.[14]
The fruiting heads are often nodding.[3]

Distribution

Senecio squalidus grows on scree in mountainous regions of native range,[3] and earned its common name Oxford ragwort for its willingness and ability to grow in similar habitat elsewhere in the world.[19]

From Wikipedia, the free encyclopedia

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Flowering Time: Flowering: V - VIII, fruitful: VII - X.

Distribution in Bulgaria: Growing in wet to dry grassy and stony places, screes and gravel places. Fore-Balkans, Western and Central Stara Planina, Vitosha region, Western border mountains (Osogovska pl.), Belasitsa, Slavyanka, Pirin, Rila, Western Sredna gora, Western and Middle Rhodopes, from (500) 1400 to 2200 (2500) m altitude. (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.

Distribution: Central and Southern Europe, Northwest Africa. Naturalized in Western and Northern Europe.

Conservation status and threats: not protected species in Bulgaria by the Biodiversity Law. - Biological Diversity Act -    http://eea.government.bg/bg/legislation/biodiversity/zbran_22.08.15.pdf

Medical plant: no, it is not - Medicinal Plants Act - http://eea.government.bg/bg/legislation/biodiversity/ZLR_en.pdf

References:   „Флора на Н. Р. България”, том VI, БАН, София, (1976) „Флора на Република България”, том XI, БАН, Академично издателство „Проф. Марин Дринов”, София, (2013), www.theplantlist.org › tpl › record › gcc-31781, Wikipedia, the free encyclopedia

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