sALrs. 315 



Subord. IV. CUPULIFERjE. Male fl. in a catkin. Fem. 

 solitary or clustered or spiked. Perianth adnata to the 

 ovary (glans), with a very minute sometimes evanescent 

 limb, surrounded by a coriaceous involucre. 



6. Fagits. Barren catlrin globose. Perianth 5- or 6-fld. 

 Stam. 8 — 15. Fertile fl. 2 together within a 4-lobed 

 prickly involucre. Stigmas 3. Ovaries 3-cornered and 

 3-celled. Nut by abortion 1 — 2-seeded. 



7. Castanba. Barren catkin long, cylindrical, Perianth 

 6-parted. Stam. 8 — 20. Fertile fl. 3 within a 4-lobed 

 muricate involucre. Stigmas 6. Ovary 5 — 8-celled. Nut 

 l-celled with 1 — 3 seeds. 



8. QtJjBBCUS. Barren catkin long, pendulous, lax. Stam. 

 5 — 10. Perianth 5 — 7-cleft. Fertile fl. solitary, vrith a 

 cupshaped scaly involucre. Stigmas 3. Ovary 3-ceUed. 

 Nut l-celled, 1 -seeded, surrounded at the base by the en- 

 larged cupshaped involucre. 



9. COEYLUS. Barren catkin long, pendulous, cylindrical. 

 Scales 3-lobed, middle lobe covering the 2 lateral lobes. 

 Stam. 8. Anth. l-celled. Perianth 0. Fertile fl. several, 

 surrounded by a scaly involucre. Styles 2. Nut 1-seeded, 

 enclosed in the enlarged coriaceous cut involucre. 



10. Oabpinus. Barren catkin long, cylindrical. Scales 

 roundish. Stam. 5 — 14. Aiith. l-celled. Fertile fl. in a 

 lax catkin. Scales large, leaflike, 3-lobed, 2-flowered. 

 Styles 2. Nut ovate, 1-seeded. 



Tribe I. Salicinece. 



1. Sa'lix Linn.^ Willow. 



Sec. 1. VlTiSALix (Dumort.). Catkin and its leafy stalk 

 tisually (but not always) deciduous together, lateral, appearing 

 with the leaves. Scales of uniform colour. Nectary of 2 



' I have ventured to place many plants as varieties which were 

 considered distinct by my able friend Mr. Borrer. I do so with 

 hesitation, being very imperfectly acquainted with many of them, 

 but foUow the example of most modern botanists. It is probable 

 that many of the lowland species are not truly natives of Britain ; 

 but evidence is wanting by which to determine their respective 

 claims. See Vu Mortier in Bull. Soc. B. Bot. Belg. i. 140; Babing- 

 ton in J. ofB. i. 167; Leefe in J. o/B. ix. 360. 



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