St r III turd/ Cluiriictrnstics 



123 



times called a "fan" — and, generally, attain a hei.eht 

 of 18 to 30 inches, according: to the \'ariety, a\-cra^ing 

 about 24 inches except that the foliage of the inter- 

 mediates is somcn'hat more dwarf. Each leaf is folded 

 length\\-ays in the middle, and the two halves of the 

 lower portion are separated b}- a new leaf which comes 

 up between them and gradualh' emerges after attain- 

 ing a length of scA^eral inches, but abo\"c that they 

 are adherent and form a solid blade, and so the outside 

 of the leaf corresponds to ^^"hat is the under side of 

 leaves generally. Each leaf sits saddle-fashion about 

 the base of the leaf next 

 above and on the opposite 

 side (Fig. X\^). 



The first of each sea- 

 son's lea\'es of most 

 species ordinarily appear 

 in the spring; but a few 

 (as, especialh', the ger- 

 maniccE and the inter- 

 mediates) generalb' be- 

 gin to put them forth in 

 the fall, and the}- attain 

 a length of a few inches 

 before freezing weather, 

 and not onh- usualh' sur- 

 vive the Avinter but dur- 

 ing mild \A-inters some- 

 times make a little growth. 



Fii;. X\". — Seldlixi;, fall 1919; 

 srjWF.D fall, I9ii-1 



The leaves of most varieties are smooth or only 

 verv slisrhtlv ribbed, but some of the neglecta; and 



