This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
The stolons of this Hawkweed are short and thick, with large leaves. The radical leaves are large, inversely lance-shaped, the inner nearly acute. The flower-stalks are glandular and hairy. The involucre is large and thick, with long silky dense hair. The phyllaries are broad, the outer loose, with a long, narrow point.
The rhizome of this species is ascending, creeping, stoloniferous. The stem is hollow, with 1-3 radical leaves below and black - based hairs, cottony and glandular above. The dull-green leaves are inversely egg-shaped, lance-shaped, blunt, toothed, hairy. The panicle is corymbose. The numerous heads are cylindric, oblong, rounded below. The dark-green phyllaries are linear, bluntish, woolly, glandular, and hairy. The smooth ligules are pale-yellow. The achenes are dark-brown, furrowed, the ridges scalloped.
This species has been reduced to a variety of H. anglicutn, Fr., and made synonymous with var. decipiens, Syme, and var. cerinthiforme, Backh. The radical outer lower leaves wither early. The 2-4 stem-leaves are clasping, the lower narrowed near the rounded base. The panicle lacks lower branches.
The habitat of this species is stream-sides and cliffs in mountainous districts on basalt and mica-schist. The stem is robust, hairy or nearly smooth. The radical leaves are egg-shaped, lance-shaped, narrow below, on long stalks, acute, entire, toothed below, downy below, the border softly hairy. The 1-2 stem-leaves are half-clasping. The panicle is corymbose, branched, with long, arching, ascending branches and flower-stalks bent inwards. The flower-stalks are glandular hairy, with little woolly felt. The 1-5 heads are large, rounded, enlarged below. The phyllaries are dark, long, with a narrow long point, narrow below, awl-like, glandular hairy, with little felted down. The ligules are light rather lemon-yellow, hairy. The styles are livid, dark.
Hieracium Lang-weUense, F.J. Hanb. - The stem of this species is stout, furrowed, with scattered white hairs below, with woolly felt and stiff black hairs. The radical primary leaves are egg-shaped, soon withering, the latter oblong, blunt, with a blunt point, and bluntly toothed below. The inner leaves are narrower, oblong, lance-shaped, narrow at both ends, acutely toothed below. The 2 stem-leaves are lance-shaped, toothed, or narrow. The heads are fairly large, 15, egg-shaped. The flower-stalks are rather slender, spreading, curved above, woolly-felted, with stiff hairs. The phyllaries are bent in, lance - shaped, linear, blunt, the inner rather acute, woolly-felted, hairy, glandular. The ligules are yellow, downy-tipped or smooth. The styles are livid.
The habitat of this species is river-banks and rocky places. The stem is stellately downy, glandular above. The radical leaves are leathery, inversely egg-shaped, oval, with fine teeth, narrowed abruptly to the woolly leaf-stalk. The inner leaves are acute, narrowed at the base, which is toothed, with woolly felt both sides. The 1-3 stem-leaves are half-clasping, the upper narrow, oval, acute. The panicle is loose, corymbose, the branches forming a raceme. The heads (2-4) are egg-shaped. The flower-stalks are woolly-felted. The dark-olive phyllaries are woolly-felted and glandular, and have a long narrow point and black hairs, the edge woolly-felted. The tips of the ligules are downy. The styles are light livid. The pits on the receptacle have the margins cut, toothed, and fringed with hairs. The plant flowers in July and August, being a herbaceous perennial i|-2 ft. in height.