Solidago puberula

Solidago puberula
	1913 illustration[1]
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Solidago
Species:	S. puberula
Binomial name
	Solidago puberula; Nutt.
Synonyms[2][3]
	Solidago puberula var. borealis Vict.; Solidago puberula var. expansa Vict. ;

Solidago puberula, the downy goldenrod,[4] is a plant species native to eastern North America from Nova Scotia and Ontario south to Florida and Louisiana. Two subspecies are commonly recognized:[2][5]

Solidago puberula subsp. puberula
Solidago puberula subsp. pulverulenta

Subsp. pulverulenta has smaller but more numerous leaves, generally 50-110 leaves 10–40 mm (0.39–1.57 in) long halfway up the stem, as opposed to 10-60 leaves 40–50 mm (1.6–2.0 in) long for subsp. puberula.

Solidago puberula is a perennial herb up to 100 cm (39.5 in) tall, with a branched woody rootstock. It can have 1-5 puberulent (hairy) stems. Leaves are toothed, tapering at the tip, puberulent on both sides. Flowering heads number 15-250, in an elongate, paniculiform array. Ray flowers are yellow, 9-16 per head. Disc flowers number 6-15 per head, each up to 3 mm long.[6][7][8][9]

References

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 386.
The Plant List
http://www.tropicos.org/Name/2703271
"Solidago puberula". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 19 November 2015.
Semple, John Cameron. 2003. New names and combinations in goldenrods, Solidago (Asteraceae: Astereae). Sida 20(4): 1605-1616.
Nuttall, Thomas. 1818. Genera of North American Plants 2: 162.
Gleason, H. A. & A.J. Cronquist. 1991. Manual of the Vascular Plants of Northeastern United States and Adjacent Canada (ed. 2) i–910. New York Botanical Garden, Bronx.
Cronquist, A.J. 1980. Asteraceae. 1: i–xv, 1–261. In Vascular Flora of the Southeastern United States. The University of North Carolina Press, Chapel Hill.
Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Flora of Canada. National Museums of Canada, Ottawa.

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[1] USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 386.

[TPL-2] The Plant List

[3] ttp://www.tropicos.org/Name/2703271

[4] "Solidago puberula". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 19 November 2015.

[5] Semple, John Cameron. 2003. New names and combinations in goldenrods, Solidago (Asteraceae: Astereae). Sida 20(4): 1605-1616.

[6] Nuttall, Thomas. 1818. Genera of North American Plants 2: 162.

[7] Gleason, H. A. & A.J. Cronquist. 1991. Manual of the Vascular Plants of Northeastern United States and Adjacent Canada (ed. 2) i–910. New York Botanical Garden, Bronx.

[8] Cronquist, A.J. 1980. Asteraceae. 1: i–xv, 1–261. In Vascular Flora of the Southeastern United States. The University of North Carolina Press, Chapel Hill.

[9] Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Flora of Canada. National Museums of Canada, Ottawa.