Our Hard Truth On CYTH4

?Fig.6262 �C Leaves not rough, opposite or sometimes crowded and appearing whorled, 0.2?2.1 mm wide, sheaths present, margins minutely serrulate, 1-nerved, midvein lacking an abaxial MK-1775 in vivo keel and conical protrusions; plants monoecious, flowers unisexual Najas guadalupensis var. guadalupensis Fig. ?Fig.6363 View it in a separate window Key adapted from Godfrey and Wooten (1979), Haynes (2000b), and Weakley (2012). Juncaceae 1 Inflorescence bract exceeding the inflorescence, inflorescence thus appearing lateral 2 �C Inflorescence bract not exceeding the inflorescence, inflorescence appearing terminal 3 2 Basal sheaths (or at least a few) producing elongate well-developed blades; inflorescence bract channeled on one side; capsules subglobose Juncus coriaceus Fig. ?Fig.6868 �C Basal sheaths not producing elongate blades; inflorescence bract not channeled on one side; capsules more or less oblong, 3-sided Juncus effusus ssp. solutus Fig. ?Fig.6969 3 Leaf blades not septate 4 �C Leaf blades septate 5 4 Stems erect and with a hardened base, never creeping or forming mats; perianth CYTH4 at the nodes, often forming homogeneous mats or stands in shallow water or saturated soils above current water level; perianth 6?10 mm long; plant strictly aquatic, submersed and sterile or emersed/stranded and fertile Juncus repens Fig. ?Fig.7171 5 Flowers or fruits borne singly (solitary) on the branches of the inflorescence; inflorescence diffuse, with slender flexuous branches; flowers often aborted; seeds without tail-like appendages Juncus pelocarpus Fig. ?Fig.7070 �C Flowers or fruits borne in heads of 3 or more, heads often spherical; inflorescence not diffuse, branches not slender and flexuous; flowers seldom aborted; seeds with or without tail-like appendages 6 6 Mature seeds with elongate tail-like appendages, body of seeds 1.2?2.2 mm long Juncus canadensis Fig. ?Fig.6767 �C Mature seeds lacking elongate tail-like appendages; body of seeds buy KU-55933 3?15-flowered; capsules 2.8?3.5 (?4) mm long, straw-colored, exerted, abruptly contracting at the summit, apex acute, valves separating (dehiscing) at maturity, equaling or just exceeding the perianth; stamens 3 or 6; seeds ellipsoid, clear amber Juncus acuminatus Fig. ?Fig.6565 �C Heads spherical, 15?60-flowered; capsules 2?3 mm long, straw-colored, exerted, apex gradually tapering to the summit, remaining attached at the tip, valves not separating (dehiscing) at maturity, subulate tips of the capsules exceeding the perianth when fully mature; stamens 3; seeds oblong, dark to clear yellow amber Juncus scirpoides var. compositus Fig. ?Fig.