ANALYTICAL KEY. IxV 



on f Leaves opposite ..... ..... 23 



\ Leaves alternate, or radical, or none ...... 30 



OQ f Trees or shrubs .......... 24 



"Herbs ............ 25 



'Stamens 2. Leaves pinnate .... OLEACEJB (p. 297). 



Stamens 4 or 5. Leaves ovate, toothed . CELASTRACE^E (p. 98). 

 Stamens about 8. Leaves broadly lobed or angular. 



ACERACE^E (p. 96). 

 Petals Inserted on the tubular calyx near the top. 



LYTHRARIE^J (p. 155). 



24 J 



25 



30 



32 



33 



^ Petals inserted within the base of the calyx . . . .26 

 26 /Leaves divided, cut, or toothed . . . GERANIACE^B (p. 88). 

 \Leavesquiteentire 27 



{Capsule 1-celled, with a central placenta and several seeds. 

 CARYOPHYLLACEJE (p. 58). 

 Capsule with a single seed . . . ILLECEBRACE^E (p. 368). 

 Capsule and ovary divided into several cells . . . .28 

 {Petals 3 or 4, with twice as many stamens. Flowers very 

 minute ELATINE (p. 78). 

 Petals 4 or 5. Stamens the same, or rarely one or two additional 

 ones 29 



Calyx tubular, 5-toothed .... FRANKENIA (p. 57). 

 Calyx many-toothed. Flowers very small . . RADIOLA (p. 84). 

 Sepals 5, quite free .... LINUM catharticum (p. 84). 



Trees or shrubs 31 



Low procumbent heath-like under-hrub, with 3 petals and 



stamens EMPETRUM (p. 396). 



Herbs rarely slightly woody at the base 34 



f Petals and stamens 6. Berry 1- or 2-seeded . BERBERIS (p. 15). 

 \Petals 4 or 5. Stamens as many, or twice as many . . .32 

 'Branches twiggy, with small green scale-like leaves. Capsule 



1-celled. Seeds cottony TAMARIX (p. 77). 



Shrubs or trees, with flat leaves. Ovary and fruit (usually a 



berry) divided into cells 33 



Petals white, alternating with the stamens . . ILEX (p. 97). 

 Petals very small, green and behind the stamens, or none. 



RHAMNUS (p. 99). 



Petals 4 35 



_ Petals 5 36 



{Leafless herbs, with brown scales. Stamens 8. MONOTROPA (p. 286). 

 Herbs with entire or divided leaves. Stamens 6, of which 2 

 are shorter, or rarely wanting . . CRUCIFER^B (p. 22). 

 Herb with compound leaves. Stamens 4 . EPIMEDIUM (p. 15). 



Stamens 10 37 



Stamens 5 . . 38 



Style single, with a broad stigma. Leaves entire or minutely 

 toothed PYBOLA (p. 285). 



87 



88 



Two styles or 2 distinct stigmas. Leaves often toothed or 



divided SAXIFRAGA (p. 165) 



Five styles. Leaves of 8 leaflets . . . OXALIS (p. 94). 

 Leaves all radical, or only one on the stem . . . .89 

 Stem-leaves several, entire ........ 40 



a 



