181 



19 Restionaceae 15 : Very probably connection is to be found in the 

 Glumiflorse. 



20 Centrolepidaceae '> : Closely related to the Eriocaulaceae and to the 

 Restionaceae. It resembles the former family in Juncella with its capitate 

 flowers, while it approaches the latter in Gaimardia with its di-merous 

 flowers. 



21 Mayacaceae ^ : That a close relation exists between the Mayacacesa 

 and Hydrocharitaceae can not be denied, if the agreement of the two families 

 in their axillary flowers, in the perianth, and in the parietal placenta is to 

 be regarded as a matter of importance. 



22 Xyridacese : The relation of this to other families is as yet un- 

 known to ns. 



23 Eriocaulacese 45 ' Related to the Restionaceae, Centrolepidaceae, Maya- 

 .caceae and Xyridaceae through the structure of the gynaeceuni and stamens. 



24 Thurniaceae : As above. 



25 Rapateaceae : Tliis family undoubtedly is closely related to the 

 Xyridacese, Eriocaulaceae and other families ; but differs from ah 1 of them in 

 having atropous ovules. 



26 Bromeliacese' : These are certainly related to the several families of 

 the Farinosae, such as the Commehnacefe, Rapateaceae, Mayacaceae and Fla- 

 gellariaceae, in their general characters. But in other respects, they are closely 

 connected with the Liliaceae and Amaryllidaceae of the Liliiflorte. When we 

 take the family's heteroclilamydeous character into account, its place is near 

 the Scitamineae, and the Liliiflorae. In the position of the ovary on the 

 other hand, some of the Bromeliacese are related to the Orchidaceae, to the 

 Hydrocharitaceae and to the Scitamiuaceae. 



27 CommelinacesB : As above 



28 Pontederiaceae 7) - This family is somewhat related to the Liliacea3 

 in floral structure. 



1) Nat. Pfl.-fam. II. i, p. 15. 2) Nat. Pfl.-fam. U. 4, p. 15. 



3) 1. c. II. 4, p. 18. 



4) ROHIAND, W. Eriocaitlaceae in das Pflanzenreich IV. 30, p. 23. 



5) 1. c. II. 4, p. 30. 



6) Nat. Pfl.-fam. II. 4, p. 40. 7) 1. c. II. 4, p. 72. 



