Clinopodium umbrosum

 An indigenous herb fairly common in wet patanas, along borders of marshy lands and slopes of tea plantations close to water courses of the wet up country from 2000 to 3600 m elevations. Flowering all the year round. 

Flower Size: 0.4 - 0.6 cm across

Pogostemon reflexus

An endemic semi-shrubby herb  in exposed or partly shaded rocky area of submontane and montane zones from 1700 to 2400 m elevations.
Rather common and flowering from October to March.

Coleus barbatus var. grandis [Syn: Plectranthus barbatus var. grandis/Plectranthus grandis/Coleus grandis]

 

An introduced shrub with country of origin unknown. Also found in tropical East Africa. Widely cultivated as a hedge plant in the upper midlands and higher hills from 1100 to 2100 m elevations. Occasionally found as an escape by watercourses close to habitations but never been known in the wild. However nothing is known about its having been introduced into the country. Flowering from September to February. 

බලයා/වල් සිරිතේක්කු[Balaya/Wal Siritekku]Indian Glorybower/Turk's Turban/Tube Flower (Clerodendrum indicum)

An introduced (Native?) common herb native to South and East Asia. Cultivated, escaped and naturalized along roadsides in the low country.

Plectranthus gardneri

An endemic herb locally common in dense shaded places of montane forests above 1450 m a.s.l. often close to streams or watercourses. Flowering throughout the year. 

Pogostemon rupestris

An endemic annual herb grows under shade close to streams in the montane and sub montane forests from 1200 to 2400 m elevations. Flowering from February to July. 

Coleus lanuginosus [Syn: Plectranthus lanuginosus]

An introduced herb native to tropical Africa. Naturalized in waste places and along roadsides of the upper hill country. Mainly in and around Nuwaraeliya.

ඉල්ල[Illa] (Callicarpa tomentosa)

Common native shrub or small tree of scrublands, home gardens, forests edges and roadsides of wet lowlands and the hill country. Flowering from August to September and March.

යක් වනස්ස [Yak Wanassa] (Anisomeles indica)

An indigenous perennial herb. Common weed in waste places and roadsides in both dry and wet lowlands and lower hills from sea level to 700 m elevations.  Flowering from September to February and July. 

Basilicum polystachyon

An indigenous herb grows on damp grounds of the dry lowlands, along secondary forest edges, roadside ditches and tanks of the intermediate zone. Flowering from March to July.

Orthosiphon thymiflorus

An indigenous perennial herb grows under shade in secondary scrub of dry lowlands to drier lower uplands up to about 500 m a.s.l. Flowering from January to April.   

කොල්ලන් කොළ/ගං කොල්ලන් කොළ/ගස් කොලන් කොළ[ Kollan Kola/Gan Kollan Kola/Gas Kolan Kola] (Pogostemon heyneanus)

An indigenous undershrub common in damp undergrowth of montane forests in the lower and higher uplands from 700 to 2000 m a.s.l. Also cultivated in the lowlands as a medicinal plant. Flowering from January to October.  Leaves and roots used in medicine.

Coleus kanneliyensis [Syn: Plectranthus kanneliyensis]

An endemic perennial herb grows in partial shade by streams in secondary wet lowland forests up to about 200 m a.s.l. A gregarious plant flowering from June to September. 

කන් හැන්ද[Kan Henda]/Blue fountain bush(Rotheca serrata [Syn: Clerodendrum serratum])

Common indigenous shrub occurs along forest margins of moist low country up to about 1200 m a.s.l. Flowering from April to September. 

ගස් තලා/ඕ තලා[Gas tala/O tala]/Shrubby Basil/Wild Basil(Ocimum gratissimum)

Common native shrub or undershrub found along shaded roadsides and waste places from sea level to about 530 m a.s.l. Flowering throughout the year. The leaves have a mint or camphor like scent when bruised.  

Coleus malabaricus [Syn: Plectranthus malabaricus]

Large indigenous herb restricted to the shaded places near streams in secondary submontane forests from 640 to 1400 m elevations. Rarely also occurs in wet lowland forests. Flowering throughout the year. 

නික/සුදු නික[Nika/Sudu nika]/Indian privet/Indian wild pepper (Vitex trifolia)

An indigenous shrub or small tree occurs from sea level to 650m a.s.l, mostly along the coast. Fruits and leaves are used in traditional medicine.  

මිල්ල/කහ මිල්ල/නියන් මිල්ල/මියන් මිල්ල/සපු මිල්ල[Milla/Kaha milla/Niyan milla/Miyan milla/Sapu milla]/(Vitex altissima)

Large native tree common in dry and intermediate zone forests. Also grown in home gardens. Bark medicinal and wood used in furniture making and construction industry. 

Isodon nigrescens

An indigenous herb rather common in shaded roadside ditches and damp undergrowth of submontane to montane forests from 1000 -2700 m a.s.l, often close to streams. Flowering throughout the year.

* Isodon hians (Benth.) H.W.Li.  is now considered as a synonym of  Isodon nigrescens (Benth.) H.Hara

Platostoma elongatum [Syn: Geniosporum elongatum]

Rather common native perennial herb in grassy slopes of the intermediate zone, lower hill country and patanas of the upper hills from 150 to 2000 elevations. Flowering from October to May and July.