330 BOURAGINACE^. (UORAGE FAMILY.) 



Sca-sliorc, South Florida. — Shrub 2° - 4° high. Leaves 3' long. Corolla 

 small, white. 



* * Fniit (/loliosr, more or less lohcd, composed of\-A nutlets, each 1-scedcd: corollce 

 lobes imn-ow, acute. 

 2. T. VOlubilis, L. Stem twining, and, like the lower surface of the 

 leaves and s])ikc.';, tomcntoso ; leaves ovate or oblong-ovate, petiolcd, roughish 

 above, paler beneath ; spikes lateral and terminal, very slender, c-ymosc, short- 

 pcduncled, spreading ; tube of the corolla contracted in the middle, the lobes 

 linear-subulate; anthers connivcnt; berry sniull, 1-3-secdcd. — South Florida. 



— Leaves V-lV long. Corolla 2" long. 



4. HELIOTROPIUM, Tourn. 



Calvx 5-partcd, pei-sistent. Corolla salvcr-forni, open at the throat, folded 

 between tiic 5 lobes. Filaments and style very short. Stigma somewhat coni- 

 cal. Fruit separable into four 1-seeded nutlets. — Herbs or shrubby plants. 

 Leaves rarely opposite. Spikes 1-sided. Flowers white or blue. 



1. H. Curassavicum, L. Annual, smooth, fleshy; stems at length 

 prostrate and dlHusc; leaves alternate or opposite, lanceolate or linear, obtuse, 

 narrowed at the base ; spikes peduneled, simple or 2-partcd, coiled in the bud ; 

 flowers small, sessile, white, bractless ; nutlets smooth. — Saline mar>hcs, Flor- 

 ida to North Carolina. June - Aug. — Stem C - 18' long. Leaves 1' - 2' long. 



— Plant dries black. 



2. H. myOSOtoideS, n. sp. Annual ; stem erect, branched, rough with 

 rigid white appressed hairs ; tlic young branches hoary ; leaves oblong or lance- 

 olate, obtuse, hispid on both sides, narrowed to the base, the lower ones opposite ; 

 spikes filiform, elongated, 1-sidcd; flowers short-pcdicellcd, some of them leafy- 

 bractcd, others bractless ; exterior calyx-lobes larger ; corolla minute (A" long), 

 white ; anthers hairy at the apex ; nutlets united, hispid at Wic aj)ex, with the 

 sides concave. — South Florida. — Stem 4' -6' high. Leaves ^' long. Corolla 

 slightly hispid. 



6. HELIOPHYTUM, DC. 



Throat of the corolla bearded, or closed by 5 indexed folds. Fruit separating 

 into two 2-celled nutlets. Otherwise like Ilcliotropium. 



1. H. Indicum, DC. Annual ; stem erect, rough-hairy ; leaves oblong- 

 ovate, often cordate, toothed or wavy on the margins, rugose, slightly roughish, 

 dccurrcnt into a long petiole ; spikes liairy, coiled, at length elongated ; corolla 

 blue; nutlets spreading — Waste places, Floiida to North Carolina. June - 

 Oct. — Stem l<^-2°high. Leaves 2' -4' long. Fruiting spike C -9' long. 



2. H. parviflorum, DC. Perennial, hirsute; stem erect, bnincbing; 

 leaves lanceolate or oblong, obtuse, entire, tapering into a slender jxliole, the 

 lower ones mostly opposite ; spikes slender ; corolla white, honrded in the tliroat ; 

 nutlets uneven, <init<d. — South Florida — Stem sin-ubby at the base, 6'- 18' 

 hii,'h. Leaves racmbrnuacoous, I' -2' long. Corolla 1" long. Spikes 2' -4' 

 long. 



