MALVACE^. 59 



them shrubby, are found in the Departments of the Pyre- 

 nees, but are Mediterranean plants. 



Order XVII.— TILIACE^. 



Trees with alternate stipulate leaves ; flowers in cymes, 

 nectariferous; sepals and petals usually 5, stamens nume- 

 rous ; ovary free, 2-10 celled. A moderately large order, 

 chiefly tropical ; not alpine. 



I. TiLIA, L. 



Flowers in axillary or terminal cymes ; peduncle with 

 a leafy decurrent bract; leaves oblique, cordate; seed- 

 vessel globose, indehiscent, 1-2 seeded. 



The two English wild species of Lime or Linden, T, 

 platyphylloSy Scop., with larger leaves, pubescent beneath ; 

 and parvifolia, Sm. (ulmifolia^ Scop.), with smaller gla- 

 brous leaves, occur throughout Central Europe ; also T. 

 vulgaris, Hayne, our cultivated species, with leaves gene- 

 rally glabrous, but pubescent in the axils of the veins 

 beneath. 



Order XVIII.— ACERACE^. 



Trees with opposite exstipulate leaves ; flowers in ra- 

 cemes or corymbs, often imperfect; calyx 5 -fid; petals 

 5 or o ; stamens 8 or more ; fruit of two or more spread- 

 ing samaras. A small order, widely distributed ; not alpine. 



I. Acer, L. 



Leaves simple, entire or lobed. 



A. campestre, L., Maple, occurs generally in woods and 



