GENERA OR FAMILIES. 89 



41. Araceous Plants. Arace^. 



(92) Aruin — flowers densely packed on the lower part of a co- 



lumnar spike (spadix), which is enclosed in a spathe or 

 leafy sheatli. 



42. Iridaceous Plants. Irtdace^. 



* Stigmas ^-parted slender, deeply 2-cleft. 



(93) Trichonema — perianth with a very short tube, and a limb 



of six deep equal segments. 



** Stigmas S-parted ; segments ividening upwards, convolute. 



(94) Crocus— perianth with a slender tube, which is twice as long 



as the six-parted equal limb. 



43. Amaryllidaceons Plants. Amaryllidace^. 



* Perianth with a cup-shaped coronet or croicn in the mouth 



of its tube. 



(95) Narcissus — perianth tubular at the base, the six-parted 



limb spreading. 



** Perianth without a coronet. 



(96) Galanthus — perianth divided to the base, the three outer 



segments larger than the three inner. 



(97) Leucojum — perianth divided to the base, the six segments 



equal. 



44. Orchidaceous Plants. Orchidace.e. 



* Plants scaly, leafless, brownish ; (pollen simple or in 



slightly cohering granules.) 



(98) Neottia — flowers small ; lip spurless, two-cleft, longer than 



the sepals. 



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