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“Gundelia tournefortii, Noaea mucronata, Thymus spp., and Salvia cryptantha – often in oak forest clearings; various graminoid formations; and high mountain steppes of Achillea vermicularis, Ajuga chia, Helianthemum nummularium, Malcolmia africana, and Marrubium parviflorum.”
“Other species typical of the "steppe arborée" are Globularia alypum, Salsola vermiculata, Thymus ciliatus, Helianthemum virgatum, Cistus libanotis, Rosmarinus tournefortii and Asparagus stipularis.”
“These forests and woodlands alternate with extensive steppe grasslands (Stipa tenacissima, Lygeum spartium) and shrub communities (Artemisia herba-alba, Thymelaea hirsuta, Ononistridentata, Helianthemum squamatum, Thymus mastigophorus) resulting a complex mosaic-like landscape.”
“However, it is known that there are over ten species of endemic plants represented in this ecoregion, including relict elements of arid and semi-arid groups; for example, four endemic species of Helianthemum and one endemic species of Thamnosma.”
“The hammadas habitats also contain endemics, such as Pithuranthos chloranrhus, Helianthemum lippii, Gymnocarpos decander and Helianthemum kahirikum.”
“Some characteristic endemics exclusive to the Park such as Caňadas rockrose Helianthemum juliae, Teide edelweiss Gnaphalium teydeum or the thistle Stemmacantha cynaroides number only 200 specimens; of others, like the endemic Teide burnet Bencomia exstipulata, there are barely 60 specimens - almost 75% of the natural specimens of this species grow on the summits of Tenerife and La Palma.”
“I have seen a similar instance in a less degree in a species of _Helianthemum_.”
“Thus, certain species of _Helianthemum_ are apetalous in Lapland.”
“In Helianthemum the capsule has been described as unilocular or trilocular; and in H. mutabile, Une lame, plus ou moins large, setend entre le pericarpe et le placenta.”
“Among the species of France, according to Jordan, _Helianthemum polifolium_, _H. apenninum_, _H. pilosum_ and _H. pulverulentum_ are of this character.”
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