Gnaphalium pensylvanicum Willd.
Details
Gnaphalium pensylvanicum Willd., Enum. Pl. [Willdenow] 867 (1809)
Nomenclature
Willd.
Willd.
1809
867
ICN
Gnaphalium pensylvanicum Willd.
species
Gnaphalium pensylvanicum
Classification
Descriptions
Gnaphalium pensylvanicum Willd.
Annual, 10-40 cm tall, usually branched only at base; stems 1-few, erect or ascending. Basal lvs mostly 0 at flowering, sometimes present and withered. Lower cauline lvs apetiolate, sparsely tomentose on upper surface, densely tomentose on lower, ± concolorous to somewhat discolorous, plane, usually obovate and long-cuneate, sometimes oblanceolate, obtuse to acute, mucronate, flat or slightly undulate, (10)-20-40-(60) × 3-8-(12) mm; upper cauline lvs similar but smaller, narrower and broader based, sometimes folded. Capitula in dense terminal and axillary clusters; clusters usually forming dense terminal spikes at ends of branches and scattered below. Involucral bracts oblong, obtuse to apiculate, 2.5-3 mm long; stereome green; lamina pale brown; gap and margins clear; outer bracts almost covered by hairs. Achenes minutely papillate, 0.4-0.5 mm long.
Taxonomic concepts
Gnaphalium pensylvanicum Willd.
Gnaphalium pensylvanicum Willd.
Gnaphalium pensylvanicum Willd.
Gnaphalium pensylvanicum Willd.
Metadata
bb30f540-134b-49e4-8b2b-4517599b095c
scientific name
Names_Plants
1 January 2000
16 April 2004