D. M. ANDREWS, BOULDER, COLO. 17 
V. gentianoides. 2 feet. Flowers in loose racemes, blue. 30c; dozen, 
$2.50. 
V. incana. $ One foot, white pubescent, flowers deep blue in 6-inch 
racemes; valuable for rockery or border. 30c; dozen, $2.50. 
V. pectinata rosea. $ Prostrate, grayish foliage, rose-colored flowers 
in short racemes, close to the foliage. 40c; 3, $1.00. 
V. repens. $ Moss-like creeper with small leaves and pale blue flow¬ 
ers. Best in part shade with good drainage. 30c; dozen, $2.50. 
V. rupestris, Heavenly Blue. $ A gem for the rock garden, mat¬ 
forming creeper with dark green foliage and azure-blue flowers in short 
racemes. 40c; 3, $1.00. 
V. rupestris rosea. $ Differs from the last in its stronger growth 
and roseate flowers. 40c; 3, $1.00. 
V. spicata. Upright to 18 inches, slender spikes of blue. 40c; 3, $1.00. 
V. spuria amethystina. Branching to one foot or more, entirely cov¬ 
ered at flowering with a mist of amethyst-blue; very lovely. 40c. 3, 
$ 1 . 00 . 
V. Virginica. Tall border perennial to 4 feet, many long racemes of 
white or pale lilac flowers. 40c; 3, $1.00. 
VINCA. Periwinkle. Valuable evergreen ground covers for sun or 
shade. 
V. major. A hardy large-leaved trailer with large blue flowers. 
Clumps, 50 cents. 
V. minor. The common Periwinkle or Myrtle. 30c; dozen, $2.50. 
VIOLA. Violaceae. Violet. Nearly all thrive best in part shade and 
a moist humus soil. 
V. bellidifolia. *$ A small tufted alpine for the moraine, the flowers 
blue and the foliage remaining green all summer. 40c; 3, $1.00. 
V. pedatifida. *t Blue, with large flowers and finely cut foliage; 
much easier to grow than V. pedata. 30c; dozen, $2.00. 
V. pubescens. Woodland yellow violet of middle U. S. 30c; dozen 
$ 2 . 00 . 
V. rugulosa. *$ 10 inches, large foliage, flowers white; slowly 
spreads by runners. 30c; dozen, $2.00. 
YUCCA. Liliaceae. Evergreen plants for deep, well-drained soil. May 
be placed in large rock gardens. 
Y. angustissima. * Extremely narrow foliage, edged with curled fila¬ 
ments. rare. Each, $1.50. 
Y. baccata. * Broad-leaved resembling an agave. The Colorado form 
is hardy; a desert type and good drainage is essential. 75c; 3, $2.00. 
Y. Coloma. (Syn. Y. neomexicana.) * Desirable for the rock garden 
because of its small size. With its miniature rosettes of stiff bluish 
foliage and slender flower stems, no hardy species is more attractive. 
$1.00 each; 3 for $2.50. 
Y. filmentosa. Best known species, fls. creamy white. 75 cents. 
Y. filamentosa variegata. A hardy variegated type and a thrifty 
grower. The leaves have narrow stripes of green and white like a 
ribbon grass, tinged red in winter. 75c; 3, $2.00. 
Y. glauca. * The common yucca of the plains, known locally as 
Soapweed. The flowers are large and sometimes tinted purplish out¬ 
side. 50c; 3, $1.00. 
Y. glauca rosea. * Very rare fotm, outside of perianth tinted rose, 
grown true from root cuttings. $1.50 each. 
