THALAMIFLORa:. 



463 



510 and 885), opening longitudinally, or by pores at the 

 apex. Z>J5^ glandular, hypogynous. Carpels'! — 10, which are 

 generally united so as to form a compound many-celled ovary 

 (^.88-4), sometimes disunited; placentas axile {fig. 884); style 

 1 {figs. 885 and 886) ; stigmas equal in number to the carpels. 

 Fruit dry or pulpy, sometimes samaroid, usually many-celled, or 

 rarely 1 -celled by abortion. Seeds solitary or numerous ; embryo 

 erect, straight, in the axis 

 of fleshy albumen; cotyledons 

 flat and leafy {fig. 744, c) ; 

 radicle next the hiliim. 



Diagnosis. — This order 

 resembles in many respects, 

 the Malvaceae, Sterculiacese, 

 and Byttneriacese. It may 

 be at once distinguished 

 from them by having a glan- 

 dular disk, by the stamens 

 not being monadelphous, 

 and by the anthers being 

 2-celled, From all other 

 Thalamifloral Exogens the 

 plants of this order may be 

 known by their alternate 

 entire stipulate leaves ; val- 

 vate gfcstivation of calj'x, Fig 

 which is also deciduous . 

 floral envelopes in 4 or 5 divisions ; stamens either distinct or 

 polyadelphous ; anthers 2-celled ; hypogynous glandular disk ; 

 many-celled fruit with axile placentas ; and embryo erect, 

 straight, in the axis of fleshy albumen. 



Division of the Order, and Examples of the Genera. — The order 

 has been divided into two tribes, as follows : — 



Tribe 1 . Tiliea. — Corolla with entire petals, or wanting ; 



anthers dehiscing longitudinally. Examples: — Corchorus, 



Tilia. 

 Tribe 2. ElaocaipecB. — Petals lacerated, anthers opening at the 



apex. Examples : — Elseocarpus, Vallea. 



Distribictio7i and 'Numbers. — A few are foimd in the northern 

 parts of the world, where they form large trees, but the plants 

 of the order are chiefly tropical, and occur in such parts as 

 herbs, shrubs, or trees. There are 350 species. 



Properties and Uses. — In their properties, the Tiliaceae re- 

 semble the Malvacese. They are altogether innocuous, and are 

 generally mucilaginous, emollient, and demulcent. Many of 

 them also yield fibres, which are much used for manufacturing 



Peduncle of the Lime, bearing two 

 flower-buds, aud a fully expanded flower. 



