nUBIACE^. (SEADDEE FAMILY.) 173 



and botanist, who died early at the Cape of Good Hope. Houstonia, made 

 a section of this genus, was much later dedicated to Dr. Houston, an English 

 botanist of the days of Linnseus who collected in Central America.) 



J 1. OLDEKLANDIA, L. CoroUa whed-shaped (or JUnnd-form), shorter or 

 scarcely longer than the calyx-lobes : anthers short ; pod wholly enclosed in and co- 

 herent iixith Hie calyx-tube : seeds very numerous, minute and angular. {Flowers 

 lateral or terminal.) 



1. O. g'lomerata, Michx. Pubescent or smoothiah; stems branched 

 and spreading (2'- 12' high); leaves oblong (^'-|' long); flowers in. sessile 

 clusters in the axils ; corolla nearly wheel-shaped (white), much shorter than 

 the calyx, g) (0. uniflora, Z. Hedyotis glomcrata, EU.} — "Wet places, S. 

 New York to Virginia near the coast, and southward. 



§ 2. H0UST6NIA, L. CoroUa salver-form or funnel-form, with the tube longer 

 than the calyx-lobes : anthers linear : upper half or the summit of the pod free and 

 projecting beyond the tube of the calyx: the teeth of the latter distant: seeds nether 

 few (4-20) in each cell, saucer-shaped, with a ridge down the middle of the hol- 

 lowed inner face. (Flowers of two forms, diceciously dimorphous; p. 171, note.) 



* Corolla funnd-form, often hairy inside: stems erect: stem-leaves sessile: flowers 

 mosdy in terminal small cymes or hose dusters, purplish. (Connects Houstonia 

 and Oldenlandla.) 



2. O. pnrpnrca. Pubescent or smooth (8' -15' high); leaves varying, 

 from roundish-ovate to lanceolate, 3 - 5-ribbed ; "alyx-lobes longer than the half free 

 gbbularpod. % (Houstonia purpurea, £. H. ■^arians, ilfjcAa:.) — Woodlands, 

 W. Penn. to Illinois and southward. May - Ju.y. — Varying wonderfully, 

 into : — 



Var. longifdlia. Leaves varying from oblong-lanceolate to linear, nar- 

 rowed at the base, 1-ribbed; calyx-lobes scarcely as long as the pod : stems 5'- 

 12' high. (Houstonia longifolia, WUld.) — Maine to Wisconsin and southward. 

 — A narrow-leaved, slender form is H. tenuifolia, Nutt. 



Var. ciltolata. More tufted stems 3' - 6' high ; root-leaves in rosettes, 

 thickish and ciliate; calyx-lobes as long as the pod. (Houstonia dliolata, 

 Torr.) — Along the Great Lakes and rivers, from N. New York to Wisconsin. 



3. O. anglistifdlia, Gray. Stems tufted from a, hard or woody root 

 (6'-20' high) ; leaves narrowly linear, acute, 1-ribbed, many of them fascicled ; 

 flowers crowded, short-pedicelled ; lobes of the corolla densely bearded inside ; 

 pod obovoid and acute at the base, only its summit free from the calyx, opening first 

 across the top, at length splitting through the partition. 1|. (Houstonia angus- 

 tifolia, Michx. Hedydtis stenophylla, Torr. 8f Gray.) — Plains and banks, from 

 Illinois southward. June -Aug. 



# # Corolla salver-form, mostly blue : pod flattish laterally and notched at the broad 



summit, or somewhat twin ; plants commonly small and slender. 



4. O. minima. Glabrous, at length branched and spreading (^'-3' 

 high) ; peduncles not longer than the linear-spatulate leaves ; pod bardy J free ; seeds 

 smoothish. ® © (Houstonia minima, Beck.) — River-banks, Illinois and 

 southward. March -May. 



15* 



