BORAGINACEAE. 361 



1. MALLOTONIA [Griseb.] Britton, Aim. Mo. Bot. Card. 2: 47. 1916. 



Silvery-silky shrubs of the seacoast, with alternate leaves and small white 

 flowers in dense, 1-sided cymes, the fruits almost capitate. Calyx mostly 5- 

 parted; corolla salverform, the 5-lobed limb shorter than the nearly cylindric 

 tube, the lobes broad, valvate. Stamens short, included. Style simple. Drupe 

 dry and bony, ovoid-conic, hollowed at the base, 2-pyrenous, the dissepiments 

 solid. [Latin, related to Mallota.~] One specie?, or perhaps 2, of tropical and 

 subtropical distribution, the following typical. 



1 -k 1. Mallotonia gnaphalddes (L.) Britton, Ann. Mo. Bot. Gard. 2: 47. 1915. 



Heliotropium gnaphalod.es L. Syst. ed. 10, 913. 1759. 

 Toitrnefortia gnapiialodes B. Br.; B. & S. Syst. 4: 538. 1819. 



A somewhat fleshy shrub, 3-12 dm. tall, with silky-tomentose foliage, much 

 branched and often forming large clumps, the twigs densely leafy. Leaves 

 numerous, linear-spatulate, 4-10 cm. long, obtuse; cymes with 24 recurved 

 branches; calyx campanulate, its lobes 2-3 mm. long, oblong; corolla surpassing 

 the calyx; fruit ovoid, 5 mm. high, black, with 2 nutlets. 



Coastal rocks and sands, throughout the archipelago from Abaco and Great 

 Bahama to Caicos and Turk's Islands, Inagua, the Anguilla Isles, Cay Sal and 

 Water Cay : Bermuda ; Florida ; West Indies ; coast of tropical Mexico. Bay 

 Lavender. 



2. TOURNEFORTIA L. Sp. PI. 140. 1753. 



Trees, shrubs or vines, with alternate entire leaves, and small secund 

 flowers in terminal, often forked cymes, the cyme-branches usually elongated. 

 Calyx persistent, 5-parted. Corolla mostly salverform, the tube cylindric, 

 swollen above, the lobes spreading. Stamens 5, borne on the corolla-tube, in- 

 cluded; filaments short; anthers ovate to lanceolate. Ovary 4-celled; style 

 terminal, 2-lobed at the apex. Drupe small, the exocarp fleshy or corky, con- 

 taining 4 nutlets or fewer. [Commemorates Joseph Pitton de Tournefort, 

 1656-1708, renowned French botanist.] Over 100 species, of tropical and 

 subtropical regions. Type species: Tourncfortia Jiirsiitissima L. 



Leaves glabrous or somewhat pubescent. 1. T. roluhilis. 



Leaves densely white-pubescent beneath. 2. T. poliochros. 



1. Tournefortia volubilis L. Sp. PI. 140. 1753. 



A slender woody vine, sometimes 3.5 m. long, the branches and leaves 

 pubescent, puberulent or glabrate. Leaves ovate to oblong or oblong-lanceo- 

 late, 2-7 cm. long, thin, acute or acuminate at the apex, narrowed or obtuse at 

 the base, the slender petioles 5-15 mm. long; inflorescence slender-peduncled, 

 of several very slender, secund spikes 2-4 em. long; calyx about 1 mm. long, 

 its lobes ovate-lanceolate, acute; corolla greenish- white, twice as long as the 

 calyx, its lobes linear-subulate, shorter than the tube: anthers ovate, included; 

 fruit depressed, 2-3 mm. broad, of 2-4 rounded nutlets. 



Scrub-hinds and coppices, Berry Islands, Andros, New Providence and Bleu 



thera to Caicos, Grand Turk, Inagua, and Anguilla Isles: Florida: Texas; Cuba; 

 St. Jan to Grenada ; Jamaica. The Bahama plant is usually less pubescent than that 

 of Jamaica. Slender Ghkkx -leaved TOUBNBPOBTIA. SOLDIBB-BUSH. 



24 



