Neanotis, Lewis, 1966

Sunil, Chandrasseril Narayanan, Salim, Pichan Mohammed, Narayanan, Matalai Kokkarammath Ratheesh, Nithya, Vadassery Madhanan, Sanilkumar, Malayil Gopalan & Anilkumar, Nadesapanicker, 2021, Neanotis prabhuii, a new species of Rubiaceae from Western Ghats, India, Phytotaxa 527 (3), pp. 234-238 : 237-238

Key to the species of Neanotis in Western Ghats

1a. Capsule indehiscent ............................................................................................................................................................................2

1b. Capsule dehiscent ...............................................................................................................................................................................4

2a. Stem broadly winged, the wings 1–1.5 mm broad, inflorescence dichasial corymbose cyme; flowers heterostylous..... N. prabhuii

2b. Stem not winged or narrowly winged; inflorescence capitate; flowers homostylous........................................................................3

3a. Calyx lobes and capsules villous................................................................................................................................. N. nummularia

3b. Calyx lobes and capsules glabrous .................................................................................................................................. N. wightiana

4a. Leaves fleshy...................................................................................................................................................................... N. carnosa

4b. Leaves membranous .......................................................................................................................................................................... 5

5a. Flowers in clusters or capitate ............................................................................................................................................................6

5b. Flowers in dichasial cyme or solitary.................................................................................................................................................8

6a. Ovary 3–4-locular.............................................................................................................................................................. N. tubulosa

6b. Ovary 2-locular...................................................................................................................................................................................7

7a. Leaves sessile, linear; capsule cells 4 – 5-seeded................................................................................................................ N. subtilis

7b. Leaves petioled, ovate or lanceolate; capsule cells 1 – 3-seeded .................................................................................. N. montholoni

8a. Leaves sessile or subsessile ................................................................................................................................................................9

8b. Leaves with distinct petiole more than 5 mm long...........................................................................................................................11

9a. Seeds 20–40 per capsule.................................................................................................................................................... N. calycina

9b. Seeds up to 16 per capsule................................................................................................................................................................10

10a. Branchlets villous; flowers in tomentose cyme; calyx lobes strigose without...................................................................... N. indica

10b. Branchlets glabrous; flowers in glabrous cyme; calyx lobes glabrous.......................................................................... N. sahyadrica

11a. Capsule dehiscing septicidally .........................................................................................................................................................12

11b. Capsule dehiscing loculicidally........................................................................................................................................................13

12a. Procumbent herb; capsule broader than long ............................................................................................................. N. monosperma

12b. Erect herb; capsule longer than broad ........................................................................................................................... N.richardiana

13a. Flowers in dense–flowered villous cyme ........................................................................................................................ N. longiflora

13b. Flowers solitary or in loose – flowered glabrous cyme or panicle...................................................................................................14

14a. Pilose herbs; stipule inconspicuous; corolla lobes with two parallel pink lines.............................................................. N. prainiana

14b. Glabrous or sparsely hairy herbs; stipule conspicuous; corolla lobes without two parallel pink lines ............................................15

15a. Annual herbs with quadrangular stem..............................................................................................................................................16

15b. Perennial herbs with terete stem.......................................................................................................................................................17

16a. Corolla lobes hairy; anthers oblong; seeds 2–4 in each cell............................................................................................... N. latifolia 16b. Corolla lobes glabrous; anthers linear; seeds many in each cell .......................................................................................... N.rheedei

17a. Capsule subglobose; calyx lobes triangular, sub erect in fruit ......................................................................................... N. decipiens

17b. Capsule broader than long; calyx lobes lanceolate, deflexed in fruit................................................................................ N.lancifolia