162 



rounded, but several in the later subdivisions acute-angled 

 fruiting calyx erect or closed : corolla small and white 

 with tube not surpassing the calyx, annuals with the flowers 

 almost always sessile and scorpioid-spicate. 



* Holocalyx. i. e. the fructiferous calyx not circumscissile, 

 but not uncummonly articulated with the rachis and falling 

 away at maturity with the nutlets included. Gray 1. c. 268. 



-| -| Typical species, slender stemmed, bractless in 



all well-developed spikes, with midrib of narrow setose- 

 hispid sepals not conspecuously if at all thickened : nutlets 

 very smooth and mostly shining, acute or acuminate, with 

 rounded sides and rather thin or little pericarp attached 

 by a part or even the whole of the slender ventral groove 

 (with or without some areolar dilatation at base) to a 

 narrow gynobase. 



++ 



++ H — \- Nutlets usually all four maturing, and all alike 

 (not over a line long) either flattish or angled ventrally, 

 ovate in outline and acute or short acuminate, attached 

 for half or nearly whole length to the subulate gynobase ; 

 the slender groove not dilated at base into an open areola 

 or scar. 



= But simple and continuous to the very base of the 

 nutlets : spikes simple or occasionally in pairs, very often 

 leafy at base and as it were interrupted and glomerate, 

 the lower part of the inflorescence being reduced to sessile 

 clusters or even to single flowers, seemingly axillary to a 

 fear, but the well-developped spikes bractless : stems or 

 branches diffuse a span to a foot long, 



K. leiocarpa F. et M. Nutlets attached by the straight 

 ventral groove nearly its whole length to the subulate 

 gynobase. — Ind. Sem. Hort. Petrop, 1835,36. A. D. C. 

 Prodr. X 135. Gray. Proc. XX 270. Evittichium leiocar- 

 pum Watson p. 194 contains this and the three following. 



