Genus 43. 



THISTLE FAMILY. 



449 



* Pappus-bristles of sterile flowers with club-shaped or dilated tips. 



t Plant not stoloniferous; basal leaves oblanceolate. 1. A. carpathica. 

 tt Plants stoloniferous, growing in patches. 

 Involucral bracts of fertile heads dark brownish green, lanceolate, acute or acuminate; plant 



i'-4' high. . 2. A. alpina. 



Involucral bracts all light green, or light brown, with white or pinkish scanous tips. 



Basal leaves and those of the ends of stolons bright green and glabrous above from the first. 

 Basal leaves small, spatulate, with only 1 prominent nerve. 3. A. canadensis. 



Basal leaves large, obovate, distinctly 3-nerved. 4. A. Parlinii. 



Basal leaves and those of the ends of stolons dull green, arachnoid at first, becoming glabrous. 

 Basal leaves large, mostly 2' 5' long, mostly 10" wide or wider, oblong to obovate, 

 3-5-nerved. 

 Stolons leafy only at the ends, scaly-bracted ; head solitary. 5. A.solitaria. 



Stolons leafy throughout; heads corymbose or subcapitate. 6. A. plantaginifolia. 



Basal leaves small, 2 long or less, spatulate to oblanceolate or obovate, mostly 1 -nerved. 

 Basal leaves persistently appressed silvery-silky on both sides. 7. A. microphylla. 

 Basal leaves dull, the upper surface more or less persistently arachnoid. 



Basal leaves abruptly apiculate ; stolons leafy throughout. 8. A. neodioica. 



Basal leaves obtuse or acute. 



Stolons leafy throughout ; western species. 



Basal leaves spatulate. 9- A. aprica. 



Basai leaves obovate. 10. A. campestris. 



Stolons leafy only at the ends. 11. A.neglecla. 



** Pappus-bristles of sterile flowers not dilated, barbellate; plant about 1' high, tufted; 



head solitary. 12. A. dimorpha. 



i. Antennaria carpathica ( Wahl. ) Hook. Carpathian 

 Everlasting. Fig. 4393. 



Gnaphalium carpathicum Wahl. Fl. Carp. 25S. pi. 3. 1814. 



Antennaria carpathica Hook. Fl. Bor. Am. 1 : 329. 1833. 



Plant floccose-woolly throughout, not stoloniferous; stem 

 2'-io' high, simple. Basal leaves oblanceolate or oblong, ob- 

 tuse or acutish at the apex, narrowed at the base into short 

 petioles, l'-2' long, 2"-4" wide; stem leaves linear, acute or 

 acutish, erect, the upper gradually smaller; heads in a termi- 

 nal subcapitate cluster, or rarely solitary, 2V-3" broad ; invo- 

 lucre 2"-3" high, woolly at the base, its bracts brownish purple, 

 the inner ones of the fertile heads mostly acutish, those of the 

 sterile heads mainly obtuse. 



In dry soil, Labrador and Anticosti to Hudson Bay. Also in 

 Europe and northern Asia. May-Sept. 



2. Antennaria alpina (L.) Gaertn. Alpine Everlasting. Fig. 4394- 



Gnaphalium alpinum I.. Sp. PI. 856. 1753. 



Antennaria alpina Gaertn. Fr. & Sem. 2: 410. 1791. 



?A. labradorica Nutt. Trans. Am. Phil. Soc. (II) 7 : 46. 

 1841. 



A. angustata Greene, Pittonia 3: 284. 1898. 



Surculose by short stolons; stems floccose-woolly, 

 F-4' high. Basal leaves usually numerous, tufted, 

 spatulate or linear-oblong, obtuse, silvery-woolly on 

 both sides, or glabrate and green above, 4"-l2" long; 

 stem leaves linear and small, few, sessile, woolly; 

 heads in a terminal capitate, or seldom somewhat 

 corymbose cluster, rarely solitary, 2"-2i" broad; in- 

 volucre about 2\" high, the bracts of the fertile heads 

 dark brownish-green, the inner ones acute or acumi- 

 nate, those of the sterile heads lighter, brownish, 

 broader and obtuse ; achenes glandular. 



Labrador and Arctic America to Alaska and British 

 Columbia. Western plants previously referred to this 

 species prove to be distinct. April-Aug. 

 29 



