Gentiana parryi
Gentiana pennelliana
Parry's gentian
wiregrass gentian
1–7(–14), terminal from caudex, decumbent to erect.
1, terminal from caudex, decumbent.
cauline, ± evenly spaced;
blade ovate, 1.5–4 cm × 8–21 mm, margins not ciliate, apex obtuse;
involucral leaves wider than cauline, ascending and conduplicate, partially enveloping base of inflorescence.
all cauline, gradually more distantly spaced distally;
blade linear to narrowly oblanceolate, 1–3.5 cm × 0.5–5 mm, apex obtuse (proximal leaves) to acute.
2–7-flowered heads or occasionally solitary flowers, occasionally with additional flowers in 1 or 2 distal axils.
solitary flowers.
calyx 10–20(–27) mm, lobes linear to lanceolate, (1–)4–8 mm;
corolla deep blue or violet-blue, campanulate, open, 33–50 mm, lobes spreading, obovate, 4–9 mm, free portions of plicae divided less than 1/2 their length into 2–5 triangular segments threadlike only toward apex;
anthers distinct.
calyx 18–45 mm, lobes linear, 10–30 mm, margins not ciliate;
corolla white with greenish purple lines abaxially on and below lobes, funnelform, open, 35–65 mm, lobes spreading, ovate, 15–25 mm, free portions of plicae deeply divided into 2 subequal, lacerate, attenuate segments;
anthers distinct.
not winged.
winged.
Gentiana parryi
Gentiana pennelliana
Reports of Gentiana parryi outside the range indicated here have been based on specimens of G. calycosa or G. affinis (studies for this flora). Because of its restriction to high altitudes, populations of G. parryi are widely scattered, especially in the southern part of its range.
Gentiana parryi has sometimes been included in G. calycosa and less often in G. affinis, but its larger, conduplicate involucral leaves, which are more or less sharply differentiated from the distal cauline leaves and largely envelop the calyces, give G. parryi an aspect distinctly different from that of either G. calycosa or G. affinis. Biometric studies by J. R. Spence (unpubl.) have supported its recognition as a species. As noted by N. H. Holmgren (1984b), these species also differ in anther length, which is 3.5–5 mm in G. parryi and 1.6–3.2 mm in G. calycosa and G. affinis. In the Rocky Mountains of central Colorado, G. parryi and G. affinis appear especially well differentiated. Where the ranges of G. parryi and G. calycosa approach each other in the Intermountain Region, G. parryi usually grows in drier habitats than G. calycosa. The distinctive involucre of G. parryi is less well developed in some Arizona plants otherwise identifiable as this species, which should be given further study.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Gentiana pennelliana is endemic to Bay, Calhoun, Franklin, Gadsden, Gulf, Leon, Liberty, Wakulla, and Walton counties in northern Florida. It usually grows in plant communities in which wiregrass, Aristida stricta, is a prominent component, hence the common name.
Gentiana pennelliana differs further from G. autumnalis in its longer, more gradually flaring corolla tube; the division of the lateral veins of the corolla near the base, so that each petal has five primary veins rather than three as in G. autumnalis and the other Gentiana species in the flora area; and stamens 7–12 mm above their insertion on the corolla tube, as contrasted with 13–30 mm in G. autumnalis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
SW CO Wildflowers
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