330 BOKRAGINACE^. (bOKAGE FAMILY.) 



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

 small, white. 



* * Fruit globose, more or less lobed, composed ofl~i nutlets, each l-seeded: corolla- 

 lobes narrow, acute. 

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

 leaves and spikes, tomentose ; leaves ovate or oblong-ovate, petioled, ronghish 

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

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

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



— Leaves V - 1 J' long. Corolla 2" long. 



4. HELIOTROPIUM, Toum. 



Calyx 5-parted, persistent. Corolla salver-form, open at the throat, folded 

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

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

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



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

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

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

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

 ida to North Carolina. June - Aug. — Stem 6' - 1 8' 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, hispid on both sides, narrowed to the base, the lower ones opposite ; 

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

 bracted, others bractless ; 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 JMong. Corolla 

 slightly hispid. 



5. HELIOPHYTUM, DC. 



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

 into two 2-celled nutlets. Otherwise like Heliotropium. 



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

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

 decurrent 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. 



