SCROPHULARINE^E. 267 



trate, creeping. Leaves opposite, thick, somewhat clasping. 

 Flowers very small, pale purple, solitary, axillary. 



.^ 13. HEMIANTHUS. 'Nutt. 



Calyx tubular, cleft on the under side ; border 4-toothed. 

 Corol with the upper lip obsolete ; the lower 3-parted ; inter- 

 mediate segment ligularte and truncate, much longer, closely 

 incurved. Stamens 2; filaments bifid, lateral fork .antherifV 

 erous. Style bifid. Capsule 1-celled, 2-valved, many-seeded. 

 * 4 ; ijS&v+ix* v Diandria. Monogynia. 



H. micranlhemoides Nutt. Herpestis micrantfui Pursh. (excl. syn.) 

 HAB. Inundated banks. Del. Aug.* Sept. '@.Stem creep- 

 ing, dichotomous. Leaves oppos-ite, crowded, sessile, obscurely 

 3-nerved. Flowers axillary, solitary, minute. '*.-> 



14. COLLINSIA. Nutt. 



. Calyx 5-cleft. Corol bilabiate, orifice closed ; upper lip 

 bifid; the lower trifid ; intermediate segment carinately sac- 

 cate .and closed over the declinate style and stamens. Capsule 

 globose, partly 1-celled and imperfectly 4-valved. Seeds 2 -3, 

 umbilicate. Didyn&mia. Angiospermia. 



C. verna Nutt. : leaves ovate-oblong, sessile, obtuse, the lower ones 

 attenuated into a long petiole ; peduncles axillary, long. 



HAB. Banks of streams. N.'Y. W. to Miss. July. 0. Stem 

 a foot high. 'Leaves opposite. Peduncles axillary, 1 -flowered. 

 Flowers particoloured. Very abundant about Utica, N. Y. Gray. 



15. LIMOSELLA. Linn. ,.^, v , 



Calyx 5-cleft. Corol shortly campanulate, 5-cleft, equal. 

 Stamens approximating by pairs.. Capsule 2-valved, sub-bilo- 

 cular, many seeded. Dydynamia. Angiospermia. 



. L. subulata Ives : leaves linear, very narrow, scarcely dilated at the 

 apex ; scape 1-flowered, as long as the leaves. 



HAB. Muddy shores. N. S. Aug. H. Stem an inch high. Flow- 

 ' ers very small, bluish- white. Mudwort. 



16. GERARDIA. Linn. 



Calyx half 5-cleft or 5-toothed. Corol subcampanulate, 

 unequally 5-lobed ; segments mostly rounded. Capsule 2- 

 celled, opening at the .summit. Didynamia. Angiospermia. 



* Flowers purple. 



1. G.pvrpurea Linn. : stem angular, much branched"; leaves linear, 

 long, acute at each end, very scabrous ; flowers nearly sessile ; teeth 

 of the calyx subulate, shert, acute. 



