I08. OXALIDACEAE — lOQ. TROPAEOLACEAE — IIO. LINACEAE 29I 



2. Valves of the fruit finally spreading. Leaves pinnate, sensitive. — Species 

 15. Tropics. Some are used medicinally. (Under Oxalis L.) (Plate 



69.) Biophytum DC, 



Valves of the fruit persisting around the central cohunn. Leaves usually 

 digitate. — Species 140. Some are used as salad or fodder or for pre- 

 paring chemical drugs and medicaments. (Including Bolhoxalis Small). 



Oxalis L. 

 FAMILY 109. TROPAEOLACEAE 



Twining, succulent herbs. Leaves alternate, undivided, peltate. Flowers 

 solitary, axillary, irregular, hermaphrodite. Sepals 5, the hindmost spurred. 

 Petals 5, yellow or red, imbrica'o in bud. Stamens 8, free ; anthers opening 

 in\\ards or laterally. Ovary superior, 3-celled. Ovule i in each cell, pendulous, 

 inverted. Style i, with 3 stigmas. Fruit separating in 2 — 3 nutlets. Seeds 

 without albumen. {Undiex GERANIACEAE.) 



Genus i, species i {T. majns L., Indian cress). Xaturali/:ed in the Island 

 of St. Helena. Ornamental plant, also yielding salad, condiments, 

 and medicaments Tropaeolum L. 



FAMILY 110. LINACEAE 



Leaves undivided. Flowers regular, hermaphrodite. Calyx imbricate in 

 bud. Petals free, with imbricate or contorted aestivation. Stamens as many 

 or twice as many as the petals. Filaments united at the base. Ovary 2 — 10- 

 celled. Ovules i — 2 in the inner angle of each cell, pendulous, inverted. 

 Fruit a capsule or a drupe. Seeds with fleshy albumen. — Genera 7, species 

 60. (Plate 70.) 



1. Fertile stamens as many as the petals, 4 — 5, furnished with glands at their 



base. Styles or st3'le-branches 2 — 5. Petals deciduous. Fruit cap- 

 sular. Herbs or undershrubs, very rarely shrubs. [Tribe LINEAR.] 2 

 Fertile stamens twice as many as the petals, 10, rarely the same number, 

 5, but then without glands at their base and style simple. Shrubs or 

 trees. [Tribe HUGONIEAE.] . 4 



2. Sepals 3-toothed at the tip. Petals very small, white. Flo\\ers 4-merous. 



Stem repeatedly forked. Leaves opposite. — Species i. North Africa 



and high mountains of Central Africa. " Alseed." Radiola Gmel. 



Sepals entire. Flowers nearly always 5-merous 3 



3. Stipules bristle-like. Corolla ^^ellow. Stamens partly (2 — 4 of them) 



with, partly without glands. Styles 3. Stigmas kidney-shaped. 

 Shrubs or undershrubs. — Species i. Naturalized in the Mascarene 

 Islands. Ornamental plant. (Under Linum L.) Reinwardtia Dumort. 

 Stipules gland-like or wanting. Stamens all furnished with glands. — 

 Species 25. North, East, and South Africa and Madagascar. L. 

 tisitatissimuni L. is cultivated for fibre and oil and yields also fodder and 

 medicaments ; other species are used as ornamental plants. " Flax." 



Linum L. 



