81 



long, obscurely triangular at the summit ; stipe very short; the 

 oblique, oval stigma minute and sessile, or nearly so. 



All the North American specimens which I have seen bear 

 imperfect seeds which are so much contracted on the lower half 

 as to appear flat. Outlines of these are given in fig. lo in the 

 plate, c exhibiting the thin edge and d. the flat side of the con- 

 traction. This species seems much addicted to this imperfection, 

 as in Herb. Gray are quite a number of European specimens 

 showing the same malformation, a. and b. exhibit perfect seeds 

 from European specimens. The fruit of the American plant 

 seems a trifle smaller than that of f'urope. 



In the drawing there is more of a style represented than 

 there should be, and the stigma is a little too oblique. 



Southern Shore of Hudson Bay. J. M. Macoun. Labrador. 

 J. A. Allen. According to Lange (Consp. Fl. Green., p. ii6), 

 this plant has been collected in Greenland. (Eu.) 



To the above should be added an undescribed species from 

 New Zealand, contained in Herb. Asa Gray, which I have called 

 S. SUBGLOBOSUM. It appears to be a floating species, the stem 

 nearly 3 dm. high ; leaves longer than the stem, 2-4 mm. wide, 

 in texture much like those of 5. androcladtim, var. fliicttians ; 

 the simple inflorescence is short, consisting of two pistillate heads 

 which are sessile and axillary; staminate heads lacking' on the 

 specimen, but apparently were only two ; ripe fruiting heads 8-10 

 mm. in diameter; fruit subglobose, obscurely angular at the 

 summit, not quite 4 mm. long, by 3 mm. broad; stigma ovaL 

 about one-third as long as the style. (See fig. I.) 



The specimen is erroneously labelled '' S. simplex, Huds., v. 

 cingustifoliiim^ Engelm." 



Coll. at Bay of Islands, N. Zealand, in the U. S. Exploring 

 Expedition under command of Capt. Wilkes. 



Explanation of the Plate. 



The figures show the fruit of different species, all X S- I- ^- subglobosum. 2. 

 'S*. eiirycarpum, enclosing S, ramosum. 3. S. Greenei. 4- -5". neglednm. 5. S, an- 

 drodadiim, one nutlet showing constriction. 6. 5. androciadum, v^i. Jiuctuans. 7. 

 S. simplex, one nutlet showing a scale. 8. S. simplex, var. angustifoiiu?n, one nutlet 

 showing constriction. 9. S. minimum, one nutlet showing a scale. \o. S. hyper - 

 horeum; a and b, perfect seeds from European specimens; c and d, imperfect seeds 

 from American specimens ; c showing the thin edge, and d the flattened side of the 

 lower half. 



