104 PPJMTJLACEAE. 



filaments short, usually flattened; anthers 2 called. Ovary 2 -10-celleJ, 

 becoming a berry or drupe-like fruit. 



Gayl,i:ssauia. Stamens 10; ovary 10-eelled; berry drupaceous, witli 10 nutlets. 

 Vacginium. Stamens 8-10: ovary 4 o-celled: the berry 1-5-eeUed. the cells many -seeded. 



GAYLUSSACIA U. B. K. Calyx adherent to the lu-eelled, lu-ovuled ovary, 

 the limb persistent. 5-toothed. Corolla tubular or campanulate, 5-toothe.d. 

 Stamens 10. opening' at the apex Fruit a globular berry-like drupe. 



G. tesinosa (Ait.) T. & (>. BNujk Hit.nlclehcnii. A much branched shrub, 

 l-'.i t'eet high; leaves alternate, oval to oblong, clothed with resinous globules, 

 flowers in clustered racemes, turned to one side; fruit edible, ripe in Aug-ust. 

 liry hills; May-June: common in a limited area in Wild Cat Den. Muscatine 

 county. 



VACCINIUM L. Calyx-liinb 4-5-toothed, persistent. Corolla 4-5-toothed or 

 4-5-lobed. Stamens 8 or 10. Ovary 4-5-eelled; ovules usually many. 



V. vacillans Kalm. Blue HitclJc'ia-nj. Shrub, usually \-l feet high, 

 much branched; branches glabrous, warty: leaves oblong, oval or obovate. 

 acute or obtuse, mucronulate. glabrous, entire or sparingly serrate, base nar- 

 rowed or rounded, short-petioled or sessile. Dry soil: May— June: fruit ripe 

 in July-August; reported from Iowa. 



PRIMULACEAE, V,;it. Primrose Family. 

 Herbs, with radii;., 1 or cauiiiie opposite, alternate or verticil i;ite leaves, 

 and regular, usually 5-parted flowers. Stamens as many as the lobes of 

 the corolla, and inserted on the corolla-tube opposite the lobes.. Ovary 

 free, rarely adnate to the calyx.- 1-celled, with one central fvee placenta ris- 

 ing from the base. 



* Acaidesceut, pl/intx. 

 Dodecatheon. Corolla rerlexed : stamens exsei'ted. 

 Anduosace. Lamb/of corolla spreading: stamens included. 



* * Caulescent plants. 

 Steironema. Flowers axilla -y : stamens 5, alternate with n sterile ones or staminodia. 

 Lysimachia. Flowers axillary, racemose or capitate: staminodia present or wanting. 

 Anagallis. Flowers racemose : corolla longer than the calyx ; capsule circumscissile. 



DODECATHEON. L. Perennial; leaves radical, oblong- Or spatulate. 

 Flowers in an involucrate umbel. Calyx short, fi-partsd, reflexed; corolla- 

 lobes much longer, retlexed, tube 1 short. Stamens united at the base, erect; 

 anthers long, conically arranged. 



D. meadia l_ Sluinthm Star. Scape 1-2 feet high, glabrous as well as the 

 leaves; flowers usually rose-color varying to white. Upland woods: Mav: 

 frequent; Winneshiek, Delaware, Scott. .Muscatine, and Johnson counties: 

 reported from Fayette county. 



ANDROSACE L. Small stemless tufted annuals, with umbellate flowers: 

 calyx 5-cleft, with a short tube; corolla white, shorter than the calyx, funnel- 

 form, n-parted, constricted in the throat, stamens and style included: cap- 

 sule o-valved, globular. 



A. occidentalis Pursh. Stem 1-3 inches high; leaves spatulate to oblong, 

 entire; plants minutely canescent. liravelly banks; April-May: Johnson and 

 Linn counties, reported fro:rj Scott county. 



STEIRONEMA Raf. Perennials. Leaves opposite or whorled. entire, 

 numerous, Flowers yellow, peduncled, axillary: calyx .">- parted; corolla 

 rotate, deeply fi-parted, tube obsolete, sinuses rounded; petals short-pointed. 

 Stamens ">, scarcely united at the base, alternate with Ji sterile ones or starai- 



