Rubia

Rubia tibetica Hook.f. (Afghanistan to W. China: Afghanistan, Kirgizstan, Pakistan, Tadzhikistan, Tibet, West Himalaya, Xinjiang as per POWO)
  

Rubia wallichiana Decne. (Himalaya to S. China: China South-Central, China Southeast, East Himalaya, Hainan, Nepal, West Himalaya as per POWO)

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BSI Flora of India Checklist Vol. 2 (Distribution):

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Flora of Peninsular India:
Rubia cordifolia
Rubia tinctoria (Karnataka) (syn. of Rubia tinctorum L. as per POWO)

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Species with description & keys from Flora of Pakistan (Distribution):
Rubia chitralensis Ehrend. (Central Asia Pamir Alai, Chinese Turkestan. Pakistan (Chitral))
Rubia cordifolia L. (Greece, N. Africa, Siberia, Manchuria, China, Japan, Afghanistan, Pakistan, India, Bhutan, Sikkam, Nepal and Tibet)
Rubia himalayensis Klotzsch (Western Himalayas, Kunawar, Kashmir, Pakistan and Afghanistan)
Rubia infundibularis Hemsl. & Lace (Afghanistan and Pakistan)
Rubia kurramensis Nazim. (Pakistan (Kurram Agency)) (syn. of Rubia infundibularis Hemsl. & Lace as per POWO)
Rubia tibetica Hook. f. (Russia (Pamir Alai), Chinese Turkestan (Kashgar), Afghanistan, Pakistan, India, Kashmir and Tibet)
Rubia tinctorum L.(In gravel at river bottoms; [1700-]3600[-4400] m. Xinjiang, Xizang [Afghanistan, India (Punjab), Kashmir, Kyrgyzstan, Pakistan, Tajikistan])

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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):
Rubia alata Wall. (Nepal)
Rubia charaefolia Wall. ex G. Don (1200 m; E. Himalaya (Nepal to Bhutan)) (Rubia charifolia Wall. ex G.Don as per POWO)
Rubia manjith Roxb. ex Fleming (1200-2100 m; Himalaya (Simla to Bhutan), Khasia)
Rubia sikkimensis Kurz (600-1000 m; E. Himalaya (Nepal to NEFA), N. Assam, Manipur)
Rubia wallichiana Decne. (600-1000 m; E. Himalaya (Nepal to NEFA), N. Assam, Manipur)

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Some species found in Indian Subcontinent with description & keys from Flora of China (Distribution):
Rubia alata Wallich in Roxburgh (Forest margins on mountain slopes, thickets; 600-2000 m. Provinces south of the Chang Jiang, east to Taiwan, west to Sichuan, north to C Henan and S Shanxi: Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang [Nepal])
Rubia chitralensis Ehrendorfer (Stony slopes in Juniperus and subalpine belt; ca. 2900[-4000] m. Xinjiang [Afghanistan, Pakistan, Tajikistan, Uzbekistan])
Rubia cordifolia Linnaeus (Sparse forests, forest margins, grasslands; 300-2800 m. Anhui, Gansu, Hebei, Hunan, Qinghai, Shandong, Shanxi, Sichuan, Xizang, Yunnan [Japan, Korea, Mongolia, Russia (Far East); S and SE Asia to Sri Lanka and Java, through the Himalaya to Afghanistan; (sub)tropical Africa])
Rubia dolichophylla Schrenk (Along rivers and among rocks; 1900-2100 m. Xinjiang [Afghanistan, Kazakhstan, Pakistan, Tajikistan; SW Asia (Iran)])
Rubia edgeworthii J. D. Hooker (Grassy slopes; ca. 2100 m. Guangxi (Longlin), Sichuan (Miyi), Yunnan (Heqing) [N India])
Rubia manjith Roxburgh ex Fleming (Broad-leaved forests, Pinus forests and thickets; 700-3600 m. Qinghai, Sichuan, Xizang, Yunnan [Bhutan, India, Nepal])
Rubia tibetica J. D. Hooker (In gravel at river bottoms; [1700-]3600[-4400] m. Xinjiang, Xizang [Afghanistan, India (Punjab), Kashmir, Kyrgyzstan, Pakistan, Tajikistan])
Rubia tinctorum Linnaeus (Rather dry open ground; 400-2300 m. Xinjiang [Afghanistan, NW India, Kashmir, Kazakhstan, Pakistan, Turkmenistan; SW Asia (Iran, Turkey); widely cultivated and escaped or weedy from Europe and the Mediterranean throughout the world])
Rubia wallichiana Decaisne (Forests, forest margins, thickets, open fields, village fences; 300-2600 m. Guangdong, Guangxi, Hainan, Hunan, Jiangxi, Sichuan, Yunnan [Bhutan, NE India, Nepal])

Pl. go through ‎Rubia page (Rubiaceae) with images of species in efloraofindia (done by me).

If you find any mis-identification, pl. let us know.
If anybody can send images of other species of this genera (for incorporation in the website), it will be really nice. Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know.