5G2 FLORA OF TEXAS. 



distinct smaller ones ; sepals lanceolate-subulate, as long 

 as the lanceolate taper-pointed 3-ungled capsule ; seed 

 ovoid, reticulated, without appendages. (J. echinatus, Ell.) 

 Varies with the smaller more numerous and crowded 

 heads conspicuously lobed by the more distinct clusters, 

 and with broader and shorter sepals and capsules. Sandy 

 swamps. July-September. Stem 2° high, from a thick 

 and creeping rhizoma; heads 4"-7" in diameter. 



J. ACUMINATUS, Michx. Stem erect, terete, like the 

 slender leaves; panicle mostly simple, erect; heads (2"-3' 

 long) 3-8-flowered ; sepals linear-lanceolate, half as long 

 as the lanceolate-oblong abruptly pointed 3-angled light- 

 brown capsule ; seeds with a short appendage at each end. 

 Sandy Avet places. Juh-September. Stem 8-15' high; 

 root fibrous ; capsule 2" long. 



** Leaves knotkss, concave or flattened. 



J. BUFOXius, L. Annual ; stems low, 2-8' high, tufted, 

 often branched; leaves very narrow; panicles forking; 

 floioers solitary or 3-G in a cluster; septals whitish, lanceo- 

 late, acute, longer than the oblong obtuse pale capsule. 

 April, May. 



146. PICKEREL-WEED FAMILY. Order, Poxte- 



DERIACE^. 



Perennial aquatic or marshy herbs, with perfect mostly 

 irregular /o?6'er5 from a 1-leaved spathe ; perianth corolla- 

 like, unequally 6-cleft or 6-pa.rted, imbricated in the bud, 

 withering-persistent ; stamens 3-6, more or less unequal, 

 and unequally inserted on the throat of the perianth ; 

 anthers 2-celled, erect, introrse; ovary free ; style single; 

 stigma 3-6-lobed ; capsule 1-3-celled, 1-many-seeded ; 

 seeds anatropous ; embryo slender in mealy albumen. 



