70O REPORT OF NEW JERSEY STATE MUSEUM. 



Platitago elongata Pursh. Slender Plantain. 



Plaintago elongata Pursh, Fl. Am. Sept. 729. 1814 [Upper Louisiana].— 

 Britton 204. — Keller and Brown 298. 



Open sandy ground of the Middle and Cape May districts; 

 rare. Not reported from the State north of our limits. 



Middle District.— Keyport (C), Pt. Pleasant (Williamson), Haddonfield 

 (C). 

 Cape May.—Czps May (S). 



Order RUBIALES. 



Family RUBIACE^. Madder, etc. 



Key to the Species. 



a. Shrub, with white ilowers in dense globular heads. Cephalanthus, p. 702 

 aa. Herbs. 



b. Leaves opposite. 



c. Trailing, evergreen, with two white funnel- form flowers (10-12 

 mm. long), with united ovaries producing a red twin berry. 



Mitchella, p. 703 

 cc. Flowers not twin. 



d. Flowers axillary, funnel-form, white or lilac, plant much 

 branched from near the base, branches procumbent. 

 e. Leaves linear-lanceolate, flowers 4-6 mm. long. 



Diodia teres, p. 703 

 ee. Leaves lanceolate or oval, flowers 12 mm. long. 



D. virginiana, p. 703 

 dd. Flowers terminal and axillary, sessile in clusters, very small, 

 2 mm. broad, white, plant usually very low and tufted. 



Oldenlandia, p. 702 



ddd. Flowers terminal, larger, 8-12 mm. broad, leaves lanceolate, 



basal spatulate. 



e. Flowers blue, with a yellow center, salverform, a dense 



rosette of basal leaves. Houstonia coerulea, p. 701 



ee. Flowers lilac, funnel-form. H.longifolia, p. 701 



bb. Leaves verticillate, stems square. 



c. Corolla, funnel-form pink, flowers in involucrate heads. 



[Sherardia avensis]* 

 cc. Corolla rotate. 



d. Annual ; fruit and plant bristly hispid, re'clining on bushes, etc., 

 leaves 6 and 8 in a whorl. G. apparine, p. 704 



dd. Perennials. 



e. Fruit bristly hispid. 



■ Blue Field Madder, a weed in cultivated ground. 



