Stemodia verticillata (Mill.) Hassl., Trab. Mus. Farmacol. 21: 110 1909. (Syn: Capraria humilis Aiton; Conobea ovata Spreng. ex Schrank; Conobea pumila Spreng.; Erinus verticillatus Mill.; Herpestis diffusa Willd. ex Cham. & Schltdl.; Lendneria humilis (Aiton) Minod; Lendneria verticillata (Mill.) Britton; Lindenbergia peteloti Bonati; Poarium veronicoides Desv.; Poarium verticillatum (Mill.) Pennell; Stemodia arenaria Kunth; Stemodia humilis (Aiton) G.Dawson; Stemodia humilis (Soland.) Minod; Stemodia macrotricha Colla; Stemodia neglecta Minod; Stemodia parviflora W.T.Aiton; Stemodia verticillata (Mill.) Bold.; Stemodia verticillata (Mill.) Sprague; Stemodia verticillata (Mill.) Stehle; Stemodiacra verticillata (Mill.) Kuntze); 
Native to: Argentina Northeast, Argentina Northwest, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana, Haiti, Honduras, Mexico Gulf, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Paraguay, Peru, Suriname, Trinidad-Tobago, Uruguay, Venezuela
Introduced into: Cameroon, Galápagos, Guinea, Gulf of Guinea Is., India, Jawa, Laos, Leeward Is., Liberia, Malaya, Mauritius, Puerto Rico, Réunion, Seychelles, Sierra Leone, Sri Lanka, Taiwan, Vietnam, Windward Is. as per POWO;
Costa Rica, Panama, Belize, Galapagos Isl., Peru, Hispaniola, El Salvador,
Lesser Antilles (I) (Anguilla (I), Dominica (I), Grenada (I), Guadeloupe (I),
Martinique (I), St. Vincent (I)), Colombia (Amazonas, Antioquia, Bolvar, Boyac,
Cauca, Cesar, Choc, Crdoba, Magdalena, Nario, Valle), Nicaragua, Guatemala,
Honduras, Ecuador, Mexico (Chiapas, Guerrero, Oaxaca, Tabasco, Veracruz),
Guyana, Surinam, Argentina (Buenos Aires, Chaco, Cordoba, Corrientes, Entre
Rios, Formosa, Jujuy, Misiones, Salta, Santa Fe, Tucuman), S-Brazil (Parana, Rio
Grande do Sul, Santa Catarina), Paraguay (Caazapa, Canindeyu, Cordillera),
Uruguay (Artigas, Cerro Largo, Paysandu, Rio Negro, Rivera, Salto, Tacuarembo),
Bolivia (Beni, Chuquisaca, Cochabamba, La Paz, Santa Cruz, Tarija), N-Brazil
(Para, Amazonas), NE-Brazil (Pernambuco, Bahia), WC-Brazil (Goias), SE-Brazil
(Minas Gerais, Sao Paulo, Rio de Janeiro), Venezuela (Barinas, Portuguesa),
Trinidad & Tobago (I), trop. Africa (I), Bioko Isl. (Fernando Poo) (I),
Cameroon (I), Guinea (I), Micronesia (I) (Pohnpei (I)), Palau Isl. (I) (Koror
(I)), Mauritius (I), La Runion (I), Singapore (I), Laos (I), Sri Lanka (I),
Vietnam (I), Java (I)
as per Catalogue of Life;
Common name: Whorled Twintip

Annual herb. Stem tufted, erect, up to 14 cm high, much branched, densely hirsute. Lower leaves opposite, upper ones in verticils of 3, broadly ovate, 0.7-1.5 x 0.4-1.4 cm, truncate at base, subacute at apex, coarsely crenate-serrate, penninerved, punctate above, scabrid along nerves beneath; petioles 3-10 mm long, densely and minutely glandular-hispid. Flowers axillary, solitary. Pedicels 1 mm long. Calyx lobes subequal, linear-lanceolate, 2.5-3.5 x 0.6 mm, acuminate at apex, minutely glandular-hispid without. Corolla 5.5 mm long; tube cylindric, 3-4 mm long, minutely glandular pilose without, pale green, with longitudinal dull purple lines; upper lip 2- lobed at apex, with clavate hairs at base; lower lip 2 mm across, with obovate-orbicular lobes, midlobe broader than lateral ones. Filaments glabrous, anterior pair 1.5-2 mm long, posterior pair shorter; posterior anther-cells unequally paired. Style short; stigma bent. Capsule orbicular, 2.5-3 x 3 mm, biconvex, shorter than calyx, glabrous, 4-valved; seeds cuneiform, 0.5 mm long, truncate at both ends, longitudinally ribbed, reticulate in between ribs, dark brown.

Flowering and fruiting: March-April
Banks of rivers, streams, etc.
Native of Tropical America; now Pantropical

  
 
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Requesting to please ID this small weed in my pot garden, Mumbai with very minute purple flowers in September 2013.


Probably Veronica species of Scrophulariaceae


Veronica species so far in efi.


Stemodia verticillata (credits: Rahul Kamble), but i feel family is Scrophulariaceae


Yes for Stemodia verticillata.

 

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Stemodia verticillata— : 3 posts by 3 authors. Attachments (3)

Pics taken at Aambyvalley Rd., Lonavala, Pune in Dec16.


 

 
 
 

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