128 The Ohio Naturalist. [Vol. XIII, No. 6, 



5. Juncus bufonius L. Toad Rush. An annual herb, S in. 

 high, with terminal inflorescence and non-septate leaves. Flowers 

 scattered singly along the one sided and usually dichotomously 

 branched inflorescence; leaf blade flat; stamens 6 or 3; capsule 

 trilocular. Williams, Lucas, Lorain, Licking. 



6. Juncus monostichus Barth. One-ranked Rush. Plant 

 12-20 in. high; culms compressed; inflorescence terminal; leaves 

 basal and involute in drying; auricles scarious; inflorescence 

 exceeded by the bract; flowers secund. Trumbull County. 



7. Juncus aristulatus Mx. Small-headed Grass-leaf Rush. 

 Inflorescence terminal, usually composed of from 10-20 heads^ 

 each head of from 2-5 flowers ; stamens exserted and persistent in 

 the fruit; capsule rarely exceeding the calyx. Fairfield, vSummit. 



8. Juncus marginatus Rostle. Grass-leaf Rush. Inflores- 

 cence terminal, of 2-20 heads, each with 5-10 flowers; flowers not 

 subtended by bractlets; capsule rarely exceeding the calyx; 

 stamens exserted and persistent in the fruit. Cuyahoga County. 



9. Juncus richardsonianus Schult. Richardson's Rush. 

 Inflorescence in tcnninal heads with fasicles of leaves; leaves 

 septate, upper cauline leaves with blades; sepals blunt; stamens 

 6; seeds blunt. Cuyahoga County. 



10. Juncus articulatus L. Jointed Rush. Leaves septate, 

 upper cauline leaves with blades; inflorescence in terminal, spheri- 

 cal glomerules; sepals acuminate; stamens 6; seeds blunt. Cuya- 

 hoga County. 



11. Juncus torreyi Cov. Torrey's Rush. Leaves septate, 

 upper cauline leaves with blades; inflorescence in temiinal, spheri- 

 cal glomerules; petals shorter than the sepals; stamens (5; seeds 

 blunt. Cuyahoga, Adams, Madison, Wood and Erie. 



12. Juncus nodosus L. Knotted Rush. Leaves septate, 

 upper cauline leaves with a blade; inflorescence in terminal, 

 spherical glomerules without fasicles of leaves ; involucre exceeding 

 the inflorescence; sepals subulate; stamens G; petals equaling or 

 exceeding the sepals. Madison, Cuyahoga, Erie, Franklin. 



13. Juncus brachycephalus Engelm. Small-headed Rush. 

 Leaves sei^tatc, with well developed blades; inflorescence in ter- 

 minal, 2-5 flowered heads; stamens 3; seeds with short caudate 

 tips. Erie, Cuyahoga, Champaign, Franklin, Madison. 



14. Juncus acuminatus Mx. Sharp-fruited Rush. Leaves 

 septate, blades of the- lower leaves 4-8 in, long; inflorescence 

 terminal, branches of 5-50 heads, rarely more or less, heads 3-20 

 flowered; petals and sepals nearly equal; stamens 3; seeds tipped 

 at each end. Ashtabula, Lake, Lorain, Cuyahoga, Huron, 

 Portage, Tuscarawas, Knox, Union, Licking, Auglaize, Carroll, 

 Champaign, Fairfield, Adams, Brown. 



