GARDEN BOTANY. xlv 



16- Colutea arboresceilS, Bladder Senna, is a common hardy shrub 

 in country gardens, with pinnate leaves, oval leaflets, and a raceme of 5 or 6 

 yellow flowers, succeeded by bladdery inflated pods. 



C. erueilta lias obovate leaflets, saffron-colored or blotched flowers, and 

 pods opening by a little slit at the top. 



17. Wistaria. Man. p. 96. The handsome wild species is occasionally cul- 

 tivated for ornament ; but we more commonly meet with 



W. Sinensis, the beautiful Chinese and Japanese species : this has 

 longer hanging racemes, of paler blue-purple flowers, in spring ; wing-petals 

 with only one auricle ; ovary pubescent. 



18. Mimosa pudiea, Common Sensitive-Plant, well known for its 

 leaves closing at the touch, is a low or trailing plant, with bristly stems ; 

 petiole bearing 4 partial petioles on its apex, each with many linear-oblong 

 leaflets ; stamens 4 or 5, of the same number as the sepals or the petals, the 

 latter united in a cup. 



L9. Albizsia Julibrissin, planted at the South, a rare house-plant at the 

 North, is a tree with twice-pinnate leaves, of many obliquely oblong leaflets, 

 their midrib at one margin, and heads of rather large purple or rose-colored 

 flowers ; the stamens being the showy part. 



20. Acacia. True Acacias are preen-housc plants, flowering in winter, known 

 by their yellow bunches of flowers, consisting almost entirely of stamens. 



A. dealbata, with glaucous, almost hoary-white twice-pinnate leaves, 

 and very small leaflets, the flowers in heads which are loosely panicled, is the 

 commonest species of the kind with compound leaves. 



A. linearis, with long and linear simple leaves and pale yellow flowers 

 in interrupted spikes, — and 



A. longifolia, with broader, lanccolat" leaves and deep yellow flowers, — 

 are the commonest of the Australian Acacias, having leaves turned edgewise, 

 or phyllodia, instead of true and compound leaves. 



Order ROSACEA. Rose Familt. 



Manual, p. 110. — Important for the fruits and the ornamental flowers it fur- 

 nishes. 



Pistil only 1, entirely free from the calyx, becoming a drupe or stone-fruit. 



Stone wrinkled or rough on the surface : flowers pink or rose-color. 1. AMYGDALUS. 



Stone smooth and even : flowers v\hite 2. PRDNUS. 



Pistils 1 or 2, becoming achenia, enclosed in the tube of the dry calyx : 



flowers perfect : herb, with pinnate leaves. Man. p. 115. SANGUISORBA 



Pistils from 2 to many, free from the calyx, which is never fleshy. 

 Pistils only 2, or even 1, in the fertile fl. : stamens many in the 



sterile : flowers monoecious, spiked : petals none : leaves pinnate. 3. POTERIUM. 

 Pistils about 5 (or 3 to 15) in a circle. 

 Shrub, with yellow flowers, usually full double. ... 4. KERRIA. 



Shrubs or herbs, with an open calyx and usually broad (white or 



pink) petals 5. SPIR^A. 



Perennial herba, with a narrow tubular calyx and narrow 



petals Man. p. 114. GILLENIA. 



Pistils many, heaped on the receptacle, the ovaries 

 Becoming dry achenia on a dry receptacle. . . . 6. POTENTILLA 



Becoming dry achenia on an enlarged juicy receptacle. . . 7. FRAGARIA 

 Becoming juicy or berry-like 8. RUBUS. 



