330 BWmAOIXACK.Ti. (nORA(;E lAMII.Y.) 



Sca-sliorc, Smilli Florida. — Slinil) 2° - 4° lii;:li- Liavcs 3' long. Comllii 

 small, wiiitc. 



* * /V»(/7 (jltAio.if, more or less luhed, composed o/" 1 -4 tiullcts, earh \-scedeil: corolltv 

 lohes narrow, aciitp. 

 2. T. VOlubilis, L. Stem twining, and, liki' tlie hnvir smfiuc of the 

 Iciives and s])ikt's, tomcntose ; leaves ovate or ol)loiig-ovate, ])etioled, rougliish 

 above, paler beneath ; sjiikcs lateral and terminal, very slender, ( ymose, short- 

 pcduneled, spreading; tnhe of the corolla contracted in the middle, the lobes 

 linear-subulate; anthers connivent; berry small, 1-3-seeded. — South Florida 



— Leaves 1' - 1^' long. Corolla 2" long. 



4. HELIOTROPIUM, Tourn. 



Calyx 5-partcd, persistent. Corolla salver-form, open at the tliroat, folded 

 between the 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 diffuse; leaves alternate or opposite, lanceolate or linear, obtu.se, 

 narrowed at the base; spikes peduncled, simple or 2-parted, coiled in the bud; 

 flowers small, sessile, white, bractlcss ; nutlets smooth. — Saline mar.-hes, Flor- 

 ida to North Carolina. June - Aug. — Stem 6'- 18' long. Leaves 1' - 2' long. 



— Plant dries black. 



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

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

 olate, obtuse, his))id on both sides, narrowed to the base, the lower ones opposite ; 

 spikes filiform, elongated, 1-sided; flowers short-pcdicelled, some of them leafy- 

 bracted, others bractlcss ; exterior calyx-lobes larger; corolla minute (^" long), 

 white ; anthers hairy at the apex ; nutlets united, hispid at the apex, with the 

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

 slightly hispid. 



5. HELIOPHYTUM, DC. 



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

 into two 2-celled nutlets. Otherwise like Heliotropiuni. 



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

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

 dccuiTcnt into a long petiole ; spikes hairy, coiled, at length elongated ; corolla 

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

 Oct. — Stem 1^-2° high. Leaves 2' -4' long. Fruiting spike 6'- 9' long. 



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

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

 lower ones mostly opposite ; spikes slender ; corolla white, bearded in the throat ; 

 nutlets uneven, united. — South Florida. — Stem shrubby at the base, 6'- 18' 

 high. Leaves membranaceous, l'-2' long. Corolla 1" long. Spikes 2' -4' 

 long. 



