in A nanas proposed by Bertoni in his monograph of the 
genus. They have kindly allowed me to present the tax¬ 
onomic part of their findings. 
From the extensive notes, photographs and specimens 
which they brought back it is evident that Pseudananas 
is a distinct genus and that Ananas consists of several 
well marked species. The data for the above as well as 
the evaluation of names are presented here in the form 
of a key and brief notes. Unless otherwise stated, meas¬ 
urements are from herbarium specimens. 
1. Syncarp bearing at maturity a minute inconspicuous coma of reduced 
squamiform bracts, never producing slips at its base; plant produc¬ 
ing elongate stolons at base; petals bearing appendages in the form 
of lateral folds Pseudananas macrodontes 
1. Syncarp bearing at maturity a conspicuous coma of foliaceous bracts, 
frequently producing slips at its base; plant not producing stolons; 
petals each bearing two infundibuliform scales ANANAS 
2. Syncarp well over 15 cm. long at maturity with copious palatable 
flesh ; scape stout and usually short 
3. Floral bracts conspicuous, imbricate and concealing the tops 
of the ovaries, strongly serrate, usually brightly colored 
A.bracteatu* 
8. Floral bracts relatively inconspicuous and soon exposing the 
tops of the ovaries, weakly serrulate or entire; seeds lacking 
flesh at maturity; scape elongate, slender 
4. Leaves stiffly erect, entire except for a long terminal spine, 
85 mm. broad A.erectifolh* 
4. Leaves recurving, serrate, not over 25 mm. broad 
A.ananassoidts 
Pseudananas macrodontes (E.Morr.) Harms 
in Engler & Prantl Nat. Pflanzenfam. ed. 2, 15a (1930) 
153—Castellanos in Rev. Cent. Estud. Doct. Cienc.Na*. 
2 (1938) 14, t. 5. 
Ananas macrodontes E. Morren in Belg. Hortic. 28 
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