They walked for two hours without running into any tunnels branching off from the main one.
C. pulla, 6 in., purplish, nodding, on slender erect stalks; C. turbinata, 9 in., purple, broad-belled; C. carpatica, i ft., blue, bfoad-belled; C. nobilis, 12 ft., long-belled, whitish or tinted with chocolate; C. persicifolia, 2 ft., a fine border plant, single or double, white or purple, blooming in July; and C. pyramidalis, 6 ft., blue or white, in tall branching spikes, are good and diverse.
The Alleghany Plateau consists of nearly horizontal beds of limestone, sandstone and shales, including important seams of coal; inclines slightly toward the north-west, and is intricately dissected by extensively branching streams into a maze of narrow canyons and steep-sided hills.
To overcome these difficulties the " branching multiple " was introduced.
Budding from the hydrocaulus may be combined with budding from the hydrorhiza, so that numer ous branching colonies arise from a common basal stolon.
