IOWA ACADEMY OF SCIENCES. 
233 
LENTIBULARIACE^ . 
Utricularia. 
571. U. vulgaris L. Swamps and ponds; common. 
PHRYMACE^. 
Phryma. 
572. P. leptostacJiya L. Woods and thickets; common. 
PLANTAGINACE^. 
Plantago. 
573. P. major L. Abundant everywhere. 
574. P. riigelii Uec. Abundant. 
575. P. lanceolata L. Local but rapidly spreading. 
576. P. purshii R. & S. (P. patagonica gnaphaloides 
Gray.) Sandy ground; infrequent. 
RUBIACE.^. 
Houstonia. 
577. H. minima Beck. Local. Several years ago it 
suddenly appeared in abundance on a dry hill at 
Iowa Falls, but after two or three seasons van- 
ished as suddenly. 
Cephalanthus. 
578. C. occidentalis L. Swampy thickets; infrequent. 
Galium. 
579. G. aparine L. Damp v^oods; common. 
580. G. horeale L. Dry, stony ground, mostly on river 
banks, or sometimes in meadows; locally very 
abundant. 
581. G. triflorum Michx. Moist woods; frequent. 
582. G. palustre h. Common in damp meadows. 
583. G. concinnum T. & G. Abundant in dry woods. 
CAPRI FOLIAGES. 
Sambucus. 
584. S. canadensis L. Common in thickets. 
Viburnum. 
585. V. dentatum L. Dry thickets; frequent. 
586. F. lentago L. Frequent in thickets. 
