PLANTAGINACE^E. (PLANTAIN FAMILY.) 2GO 



4. P. IANCEOLATA, L. (RlBGRASS. RlPPLEGRASS. ENGLISH PLAN- 

 TAIN.) Mostly hairy; scape grooved-angled, slender (l-2 high), much 

 longer than the leaves; spike short and thick, y. Dry fields, mostly east- 

 ward. (Nat. from Eu.) 



4. Flowers all perfect and commonly fertile, but of 2 sorts on different plants, some 

 with small anthers on short fdaments, others with large anthers on long -exser ted fda- 

 ments : corolla glabrous, the broad round lobes widely spreading : seeds 2 (one in 

 each cell), boat-shaped, deeply holloived on the face: mostly annuals, with narrow 

 woolly or hairy leaves. 



5. P. Patagoilica, Jacq. Silky-woolly, or becoming naked; leaves 

 l-3-nerved; spike cylindrical or oblong, dense; sepals very obtuse, searious, 

 with a thick centre. (Found through almost the whole length of America.) 



Var. gliapiialioidcs. White with silky wool; leaves varying from 

 oblong-linear to filiform; spike very dense (i'-4' long), woolly; bracts not 

 exceeding the calyx. (P. Lagopus, Pursh. P. gnaphalioides, Nutt.) Dry 

 plains, W. Wisconsin? and southwestward. Runs through var. spinulosa and 

 var. nuda into 



Var. arist&ta. Loosely hairy and green, or becoming glabrous ; bracts 

 awned, 2-3 times the length of the flowers. (P. aristata, Miclix., c.) Illinois 

 and southward. 



$ 5. Flowers diceciously polygamous, or of 2 sorts ; the mostly sterile ones with the usual 

 large anthers on long capillary filaments, and the lobes of the corolla reflexed or 

 spreading ; the truly fertile with minute anthers on short included filaments and the 

 corolla closed over the fruit in the form of a beak: stamens 4 : pod 2-celled: seeds 1 

 or rarely 2 in each cell, nearly flat on the face: annuals or biennials, with rather 

 obscurely and few-ribbed leaves. 



6. P. Virgiiiica, L. Hairy or hoary-pubescent (2' -9' high); leaves 

 oblong, varying to obovate and spatulate-lanceolate, 3-5-nerved, slightly or 

 coarsely and sparingly toothed ; spike dense, often interrupted or loose below ; 

 sepals ovate or oblong. (Includes many nominal species.) Sandy grounds, 

 Rhode Island to Illinois and southward, May-Sept.- 



$ 6. Flowers of 2 sorts as in % 5, but the stamens only 2, and the corolla of the truly 

 fertile not so much closed: pod 2-celled: seeds 2-19 in each cell, not hollwced 

 on the face : small annuals or biennials, with narrowly linear or awl-shaped and 

 obscurely \-ribbed leaves. 



7. P. pusHBla, Nutt. Minutely pubescent (l'-4' high); leaves entire; 

 flowers crowded or scattered ; pod short-ovoid, 4-seeded, little exceeding the calyx 

 and bract. Dry hills, New York to Illinois, and southward. April -Aug. 



8. P. lieteropliylla, Nutt. Leaves rather fleshy, acute, entire, or den- 

 ticulate, or some of them below 2-4-lobed or toothed ; scapes 2' -8' high, in- 

 cluding the long and slender spike of often scattered flowers ; pod oblong-c.onoidal f 

 10~2S-$eeded, nearly twice the length of the calyx and bract. (P. pusilla, 

 Decaisne, in DC.) Low or sandy grounds, from Maryland southward, April - 

 June. 



23* 



