ADICEA II 



cuneata vel rotundata, 3-nervata, petiolis lamina brevioribus. 

 Florum cymi 8-10 in caule, 3 vel 4 in ramis, in axillis foliorum 

 graciliter pedunculati et pedicellati. Achaenia i mm. longa, 

 ^-^ mm. lata, flavido- viridia, aliquantulum punctata, nihilo- 

 minus autum aequalius colorata, apice acuto. 



Stem annual, branching from near the base with spreading 

 or even horizontal branches, or simple, ascending or almost erect, 

 30-40 cm. high, fleshy, glabrate, pellucid. Leaves opposite, 7-10 

 pairs, watery (after drying membranous), 2-9 cm. long, 1.5-4 

 cm. wide (those of the branches 2-4 cm. long, 1-2 cm. wide), 

 ovate, short-acuminate, coarsely crenate-serrate with 6-12 teeth, 

 cuneate or rounded at base, 3-nerved with the lateral nerves ending 

 in the 2nd tooth, petioles shorter than the blades. Flower clusters 

 8-10 on the stem, 3 or 4 on the branches, in the axils of the leaves 

 on slender peduncles and pedicels, about }i as long as the sub- 

 tending petioles. Achene i mm. long, yi-Yi mm. wide, yellowish 

 greene, somewhat dotted, but still rather uniformly colored, less 

 compressed than in the other species, with acute apex. 



The species is represented in my herbarium by two sheets. 

 One was collected on August 24, 1902, in rich, moist woods in 

 Wells County, Indiana, by Mr. Chas. D. Deam, for whom the 

 species is named. It is a large plant, and its having so remarkably 

 small achenes I at first ascribed to its probable immaturity on 

 account of the rather early date for its collection. Later, when I 

 received from Prof. J. "A. Nieuwland a sheet, collected at Mineral 

 Springs, Indiana, on the 26th of September, 191 2, I noticed how 

 at this ripe old age the size of the achene was not larger, and thus 

 must represent the normal manifestation of the species. 



5. Adicea putnila (L.) Raf. 



Preliminary to all the work here needed, it is necessary to 

 know what A. pumila is, and this in especially all-important in 

 regard to the green-seeded species. Through the courtesy and 

 kindness of Dr. Edward L. Greene I received some time ago elab- 

 orately selected specimens of fully developed A. pumila, collected 

 late in the season in the Potomac Valley. The study of these aided 

 me in attributing to this species the following differential characters, 

 most of them noticeable only in the mature plant. 



Stem reaching a length of 6 dm., with later on spreading 

 branches, some of which are often longer than the part of the stem 



