Jennings: Contribution to Botany of Isle of Pines. 261 



665. Diapedium assurgens (Linnaeus) Kuntze. 



Justicia assurgens Linn^us, Systema Naturae, Ed. X, 1759, p. 850. 



Dicliptera assurgens Jussieu, Annales du Museum d'Histoire Naturelle, Paris, 



IX, 1807, p. 269. 

 Diapedium assurgens O. Kuntze, Revisio Generum Plantarum, 1891, p. 485. 



Between Bogarona and Caleta Grande, May 22, 1910, 0. E. Jen- 

 nings, No. 526. General Distribution: Florida, the Bahamas, the 

 West Indies, Mexico, and south to Colombia. 



Family RUBIACE^. 

 Key to the Species Enumerated. 

 Ovules numerous in each cell of the fruit. 

 Fruit a dry capsule, or at least dry. 



Flowers single or in decussate cymes or panicles. 

 Seeds wingless. 



Lobes of the corolla valvate; fruit dry, two-celled; herbs; peduncles 

 usually filiform, axillary. 

 Stems hirsute; leaves short-petioled, ovate to oblong, 0.5-2.5 cm. 



long 668. Oldenlandia unifiora. 



Stems glabrous; leaves lanceolate to lance-linear, 2.5-6 cm. long, 

 corolla lobes half as long as the tube. .666. Oldenlandia herbacea. 

 Stems glabrous or glabrescent; leaves lanceolate or linear, about 

 2-3 cm. long; corolla lobes as long as the tube. 



667. Oldenlandia corymbosa. 

 Lobes of the corolla imbricate; capsules two-celled; stipules between 

 the petioles. 

 Leaves fleshy, furrowed on the back; stipules sheathing; low 

 shrubs with solitary sessile flowers. . 669. Rachicallis americana. 

 Leaves not fleshy; stipules not sheathing; shrubs (or trees) with 

 flowers in paniculate or simple cymes or clusters. 

 Leaves oblong-ovate to obovate, the upper 3-4 cm. wide. 



671. Rondeletia correifolia. 

 Leaves narrowly oblong to oblong-oblanceolate, 8-18 mm. 



wide 670. Rondeletia calcicola. 



Seeds winged, flat; stipules between the petioles. 



672. Exostema ellipticum. 

 Flowers in dense rounded heads. 



673. Cephalanthus occidentalis var. salicifolius. 

 Fruit fleshy. 



Corolla-lobes valvate. 



Creeping or trailing herbs with the flowers glomerate on a long axillary 



peduncle 675. Coccocypselum nmnmularifolium. 



Scandent shrubs with the flowers in rather slender terminal racemes. 



674. Gonzalea leplantha. 



Corolla-lobes imbricate or twisted ; shrubs or trees with intrapetiolar stipules. 



