74 Sargant . — Theory of the Origin of Monocotyledons 
Rhizophoreae. 
Rhizophora Mangle . 
Rh. conjugata .... 
Cucurbitaceae. 
Megarrhiza Californica, 
Torr. ( = Echinocystis 
fabacea) 
Umbelliferae . 
Smyrnium perfoliatum . 
S. rotundifolium . . . 
S. Olusatrum .... 
Bunium luteum (=Mu- 
retia tanaicensis) 
Chaerophyllum bulbo- 
sum 
Prangos ferulacea . . . 
Compositae. 
Serratula radiata . . . 
Primulaceae. 
Dodecatheon Meadia . . 
Polygonaceae . 
Polygonum bistorta . . 
P. sphaerostachyum . . 
Rheum Moorcroftianum 
Klebs, 29 , p. 562. 
Kerner and Oliver, I, p. 602 
(Fig-)- 
Darwin, 10, p. 81 (Fig. 58). 
Lubbock, 30 , I, p. 597. 
Lubbock, 30 , II, p. 29 (Fig.). 
Lubbock, 30 , II, p. 24. 
Lubbock, 30 , II, p. 24. 
Holm, 20 , p. 66. 
Bernhardi, 4 , p. 607 (Fig.). 
Irmisch, 21 , p. 22 (Fig.). 
Bernhardi, 4 , p. 575 (Fig.). 
Winkler, 43 , p. 137 (Fig.). 
Bernhardi, 4 , pp.573, 578 (Fig.). 
Winkler, 43 (Fig.). 
Lubbock, 30 , II, p. 439. 
Holm, 18 . 
This list, though doubtless incomplete, contains no case 
which is not well authenticated 1 , and I have purposely omitted 
from it those species which possess a cotyledonary tube wide 
in proportion to its length, even when the length is consider- 
able. In such seedlings the plumule develops without diffi- 
1 The petioles of the cotyledons in Megarrhiza Californica are said to be 
apparently connate but really separable (Lubbock, 30, I, p. 597). This does not 
agree with the description of Asa Gray, quoted by Darwin (10, pp. 81-3). 
