LEDUM ERICACEAE 433 



CLADOTHAMNUS 



13 LEDUM L. Gen. n. 546. 

 Low shrubs with alternate persistent, more or less resinous- 

 dotted slightly fragrant leaves, and fascicles of white flowers de- 

 veloped from separate mostly terminal buds with well imbricated 

 caducous scales and bracts. Calyx 5-lobed or 5-parted, persistent. 

 Petals 5, widely spreading. • Stamens 4-10 : filaments filiform : 

 cells of the anthers opening by terminal pores. Style filiform, 

 persistent. Pedicels recurved in fruit. Capsule oval or oblong, 

 septicidally 5-valved from the base upward : placentse pendulous. 

 Seeds slender, with a loose coat. 



* Leaves densely toraentose beneath, the wool soon ferruginous and 

 the margins strongly revolute : inflorescence all terminal. 



L. Groenlandicum Oeder Fl. Dan. t. 567. L. latifolium Ait. Stems 

 erect or ascending, 1-4 feet high, the branchlets rusty-tomentose : leaves 

 oblong, obtuse, 1-2 inches long, green and slightly rugose above : flowers 

 4-5 lines broad, umbellate or short-corymbose, numerous pedicels brown- 

 canescent, 10-12 lines long, recurved in fruit : stamens 5-7 : capsule ob- 

 long, canescent, 3-4 lines long. In cold marshes, northwest Washington 

 to Alaska and across the Continent. 



* * Leaves glabrous both sides : inflorescence terminal or some- 

 times lateral. 



L. glandulosum Nutt. Trans. Am. Phil. Soc. viii, 270. Stout, 2-6 

 feet high : leaves oblong or oval, 1-3 inches long, green above, white and 

 resinous atomiferous beneath : inflorescence often compound and crowded : 

 flowers numerous, white, 3-4 lines in diameter : calyx 5-parted : capsule 

 oval, retuse. In wet places, California to Brit. Columbia and the Rocky 

 Mountains. 



* * Leaves entire. No thin-scaly strobilaceous buds. Corolla 

 of distinct petals or 5-cleft. Anthers opening longitudinally from 

 the apex nearly or quite to the base of the cells, or by terminal 

 pores. Capsule 2-B-valvcd from above. 



14 CLADOTHAMNUS Bong. Veg. Sitk. 37, t. 1. 



Erect branching shrubs with alternate deciduous leaves and 

 solitary terminal or axillary reddish flowers from leafy shoots of 

 the season. Sepals 5, somewhat foliaceous, as long as the five 

 spreading petals, persistent. Stamens 10 : filaments dilated below : 

 anthers oblong, opening longitudinally from the apex nearly or 

 quite to the base of the cells. Style long, declined and incurved, 

 thickened at the apex, and annulate around the discoid stigma. 

 Capsule depressed-globose, 5-6-celled ; septicidally 5-valved from 

 above, many-seeded. Seeds oval, with a loose cellular coat. 



C. campanulatus Greene Eryth. iii, 65. , "Shrub 4 to 5 feet high, 

 with few and stoutish ascending branches : leaves lanceolate, 1 to 3 inches 

 long, tapering to a short petiole which, together with the veins beneath, is 

 more or less strigose-hirsute with red hairs : flowers solitary or in pairs or 

 in threes, from lateral buds, on pedicels % inch long, these setose-hispid 

 with red hairs: sepals ovate-oblong, densely ciliate with short gland- tipped 

 hairs: corolla light salmon-color, campanulate, the petals joined together 

 at base into a short tube; anthers opening only by a pair of large round 

 terminal pores. High mountains of Washington and British Columbia; 

 hitherto confused with the typical species, which belongs to Alaska." 



