tnat mat is a good species. I have no specimens of S. Portulaca- ■' ^1 
strum from the Northern States. Equally I have now no doubt 
but thX& sessile, Nutt, (not DC.), iksthis S. pentandrum, as you 
say in theSRulletin.” V 
78. New Stattej—Erodium cicutarimn, L’HekjWallabout Swamp, on 
Nostrand Ave., Brooklyn, nearly opposite thbsjiat factory.— Lysima- 
clua vulgaris, L.; W^b^tushing.—Pedicularis lanc^lata, L.; New Lota 
and Centreville, L. I.—VUlgare, L.; GowaW, Centreville 
&c., L.I.—Nirandra physaloide^Sisertn.; Woodhavtn, Ki M. Rugef! 
79. Notes and Queries.—I am desirous of obtaining pecnli&r forms of 
_ Lechea. especiall y from t . h ft araifk. f - -n-i_.__ 
[ ■ \ i 
■ „t-ss-’URi Botanic av G arden 
GEORGE ENGELMANN PAPERS 
47 
remains undeveloped. The’ anther cells are arranged not/hbove 
one another as in other Lernnse, but behind one another or,6blique- 
ly lateral, as had been stated before. The filaments show spiral 
vessels, especially visible in the connective. 
The ovules he finds single or in twos, (in the Detroit plant they 
were always lktwos.) 
He then gi vespa minute account of the structure of the ovules 
and of the horizontal seed. The seeds are single, in one specimen 
only he found two immature but regularise yel oped seeds. In all 
the specimens examined they were covered with epidermis, and 
therefore smooth ; but supposes Miat in a later stage the epi¬ 
dermis disappears and thek the seed might have a ribbed appear¬ 
ance, much like the other L&mnm in which the epidermis is more 
easily destroyed and thus thej^uliar surface markings brought to 
light. The endosperm is thickexHhan in other Lemnse—there is 
also a difference in the sljrof the embryo. 
In a systematic poinj/of view the structure of the anthers would 
fortify the genus Spypodela, which altogether proves to be the most 
highly developed all Lemnacese, if the secbpd species of the ge¬ 
nus, Spirodela oftgorrhiza, should exhibit the s&pte character ; but 
the flowers o|4his are to him unknown. 
The nur^ber of ovules proves of little importanckgas a generic 
character. Not only that here one as well as two oc^nj—he has 
now also become acquainted with a form from different ^s&rts of 
Australia, which, in most respects very similar to Lemna minor, 
shows regularly two ovules, and which on that account he had for¬ 
merly thmipbt he T, ttikJaa Hnf wlviph now ie in^incrl 
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