ANALYTICAL KEY. IxV 



22 ("Leaves opposite 23 



\ Leaves alternate, or radical, or none 30 



on /Trees or shrubs 24 



^\Herbs 25 



{Stamens 2. Leaves pinnate .... OLBACB^S (p. 297). 

 Stamens 4 or 5. Leaves ovate, toothed . CELASTRACILE (p. 98). 

 Stamens about 8. Leaves broadly lobed or angular. 

 ACERACE.*: (p. 96). 



[ Petals inserted on the tubular calyx near the top. 

 254 LYTHBABIB^S (p. 155). 



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

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



\ Leaves quite entire 27 



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

 27 J CARYOPHYLLACE^E (p. 58). 



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

 t 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 .... LLNUM catharticum (p. 84). 



Trees or shrubs 31 



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



stamens EMPETRUM (p. 396). 



Herbs rarely slightly woody at the base 34 



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

 \Petals4or5. Stamens as many, or twice as many . . . 32 

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



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



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

 V berry) divided into cells 33 



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

 Petals very small, green and behind the stamens, or nona 

 BHAMNUS (p. 99). 

 Petals 4 35 

 Petals 5 36 



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

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

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

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



o ft /Stamens 10 37 



*\Stamens5 38 



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



toothed PYBOLA (p. 285). 



87 Two styles or 2 distinct stigmas. Leaves often toothed or 



divided SAXIPRAGA (p. 165) 



Five styles. Leaves of 3 leaflets . . . OxAUS (p. 94). 

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



Stem-leaves several, entire 40 



d 



28 



29 



30 



