Hieracium venosum (L.)
Habitat: Dry open pine or oak woods and barrens, usually in grassy openings. [Dry barrens (partly forested, upland)]
Range: Southern Maine to southern Ontario, south to Delaware and upland to Georgia and Tennessee.
Aids to Identification: Rattlesnake hawkweed has 1 or a few smooth stems, growing to a height of 20-80 cm. The stems have no leaves, or sometimes they may have 1-3 small leaves. There is a rosette of basal leaves, which are 3-16 cm long, with bristles along the edges and near their base and veined with purple. The yellow flowers are numerous, with 15-40 per head.
Ecological characteristics: In Maine, this species is known to occur in pitch pine - scrub oak barrens.
Phenology: Flowers June - July.
Synonyms: Formerly known as H. venosum var. nudicaule (Michx.) Farw.
Known Distribution in Maine: This rare plant has been documented from a total of 3 town(s) in the following county(ies): Cumberland, Penobscot, York.
Dates of documented observations are: 1909, 1991, 1996, 2000
Reason(s) for rarity: At northern limit of range.
Conservation considerations: Heavy all-terrain vehicle use of the sandy habitats where this occurs would be detrimental to the plant populations.