Fedia. VALERIANACE^. 53 



upper leaves usually incisely toothed ; bracts oval-lanceolate, acute, not 

 cUiate. 



Texas, " between Bejar and Austin, Berlandier" DC. (under Valerian- 

 ella pumila), Drummond /—Habit of F. radiata. Leaves very slightly if at 

 all ciliate. Flowers in small glomerate cymules. Bracts without scarious 

 margins. Corolla very small and short. Stigma with 3 short lobes. Cells 

 of the fruit each very obscurely 1-nerved, and obtuse at the apex ; the point 

 of the fertile one slightly produced, but not appearing like a tooth of the 

 calyx. — This apparently very distinct species (allied doubtless to F. pumila, 

 and perhaps also to F. turgida,) we would dedicate to Joseph Woods, Esq. 

 F. L. S., a well-known British botanist, whose admirable memoir entitled 

 " Observations on the species of Fedia'' (published in the seventeenth volume 

 of the Transactions of the Linnaean Society), has thrown much light upon 

 the European species. 



X Doubtful Species. 



7. F. chenopodifolia (Pursh) : dichotomous ; leaves ovate, acute, toothed 

 towards the base; cymes naked, divaricate-dichotomous ; filaments long. 

 Pursh, Ji. 2. p. 727. 



Virginia, Herb. Sherard. @ About a span high ; flowers the size of 

 yaleriana officinalis. Pursh. 



Order LXXV. DIPSACE^. Vaill; DC. 



Tube of the calyx adherent to the ovary, or sometimes free except 

 at the summit ; the limb various, sometimes forming a hairy or plu- 

 mose pappus. Corolla tubular ; the limb 5-cleft, or 4-cleft by the 

 union of the two superior lobes ; the inferior lobe larger and overlap- 

 ping the others in aestivation. Stamens 4, inserted into the corolla 

 towards its base (the posterior one suppressed), distinct, or rarely with 

 the filaments united in pairs : anthers introrse : pollen tetrahsedal. 

 Ovary 1 -celled, with a single suspended ovule : style filiform : stigma 

 simple or 2-lobed. Fruit membranaceous or acheniform, indehiscent, 

 crowned with the limb of the calyx, 1 -celled, 1 -seeded. Seed anatro- 

 pous, with a very thin testa which often coheres with the pericarp. 

 Embryo nearly the length of the fleshy albumen. — Herbs or suflfrutes- 

 cent plants (none of them natives of America) ; with opposite or 

 verticillate sessile leaves, without stipules. Flowers aggregated in a 

 dense involucrate head upon a common receptacle (rarely in dense 

 whorls), each usually subtended by a chaff"-like bract, and surrounded 

 at the base by a very short closely appressed monophyllous involucel ; 

 the corolla of the exterior flowers often radiant. 



I. DIPSACUS. Tourn. ; Linn. ; Gcertn. fr. t. 86 ; Coult. Dips. p. 21, 

 /. 2-4, 4- in DC. prodr. 4. p. 695. 

 Flowers capitate ; the involucre polyphyllous, longer than the somewhat 

 foliaceous and acuminate chaff of the receptacle. Involucel 4-sided, closely 



