THE ORNAMENTAL PLANTS — PERENNIALS 267 



changing to pink; pendent; tubular; not showy, but beautiful. 



Rich soil. Partial shade. 

 Tree Peony, PoBonia Moutan. (See May, Pseonia.) 

 Moss Pink, Phlox subulata."^ 6 in. April-June. Numerous deep 



pink, small flowers; creeping habit; evergreen. Suitable for dry 



places as a covering plant. 

 Trilliums.* Of several species ; always attractive and useful in the 



border (Fig. 252). They are common in rich woods and copses. 



Dig the tubers in late summer and plant them directly in the border. 



The large ones will bloom the following spring. The same may be 



said of the erythronium, or dog's-tooth violet or adder's tongue, and 



of very many other early wild flowers. 



May 



Ajuga reptans. 6 in. May-June. Spikes of purple flowers. Grows 

 well in shady places ; spreading. A good cover plant. 



Mad wort, Alyssum saxaiile var. compactum. 1 ft. May-June. Flow- 

 ers fragrant, in clusters, clear golden-yellow. Foliage silvery. 

 Well-drained soil. One of the best yellow flowers. 



Columbine, Aquilegia glandulosa and others (Fig. 253). 1 ft. 

 May-June. Deep blue sepals; white petals. Aquilegias are old 

 favorites. (See June.) The wild A. Canadensis^ is desirable. 



Lily-of-the- Valley, Convallaria niajalis.^ 8 in. May-June. Racemes 

 of small white bells ; fragrant. Well known. Partial shade. (See 

 page 381.) 



Fumitory, Corydalis nobilis. 1 ft. May- June. Large clusters of fine 

 yellow flowers. Bushy, upright habit. Does well in partial shade. 



Bleeding-Heart, Dicentra spectahilis. 2| ft. May-June. Well known. 

 Racemes of heart-shaped, deep pink and white flowers. Will bear 

 partial shade. 



Crested Iris, Iris cristata.'^ 6 in. May-June. Flowers blue, fringed 

 with yellow. Leaves sword-shaped. 



German Iris, /. Germanica. 12-15 in. May-June. Numerous varie- 

 ties and colors. Large flowers, 3-4 on a stem. Broad, glaucous, 

 sword-shaped leaves. 



Peony, Pceonia offi^cinalis. 2 ft. May-June. This is the well-known 

 herbaceous peony. There are numerous varieties and hybrids 



