Due to your Inborne Kindness and Creature of Curiosity traits, you gain a +2 to your charisma

Creature of Curiosity

Nymphs are known to be creatures of curiosity almost to a fault in that they love to explore new places, people, and things. This curiosity often leads them to be discoverers of new things, experimentalists, and a touch naive in that they often call everyone they meet a friend and easily place their trust in them.

Inborne Kindness

Since nymphs are born of nature they have an inherent need to protect nature in any sense of the word, including beasts, plants, and humanoid creatures. They have a slight disdain for "unnatural creatures" such as the undead, demons, devils, etc. However, this kindness and empathy toward natural creatures allow them to be relatable and even charming in most interactions. 

Darkvision allowed a creature to discern forms, as in normal daylight vision, but only in shades of gray. Monsters with this ability could only see in the dark up to a certain distance.

Due to small stature base speed is 25 ft. 

You can speak, read, and write Common, Sylvan, and one language spoken by your mortal parent. 

Nymphs don’t need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep. Magic cannot put you to sleep. In addition, you do not need to eat, though you require more water than an average humanoid. * credit to MellieDM

You can communicate with trees, bushes, flowers, and rivers as if they were beasts. They do not have words, but you can understand their basic needs, desires, and traumas. *Credit to MellieDM

Your wisdom score increases by 1

The alseides have the shape of a humanoid, at least as they live and breathe as adults. As children, however, they are born of seeds and into bushes or flowers. As they grow, should they survive, they learn how to take on a more humanoid appearance inspired by their mortal parentage. Even in their humanoid form, the alseides have traits that clearly give away their appearance. Hair in the form of flower petals, ivy, thorns or weeds; and skin soft like a petal and in a wide variety of bright and beautiful colors. 

Alseides have the unique ability among nymphs to spread their pollen, and this has become their trademark. Their pollen is highly concentrated in comparison to that of a normal flower, and so their effects seem driven much more by magic than by nature. *credit to MellieDM

Due to the floral/botanical nature of your body, you have a vulnerability to Fire damage

You can use an action to send out a burst of pollen and your herbal ancestry determines the effect on those your select. Choose a number of creatures in a 15 foot radius equal to your Charisma modifier (minimum 1) to make a saving throw, DC for this saving throw equals 8 + your Charisma modifier + your proficiency bonus. A creature gains the listed condition on a failed save until the end of its next turn. Undead, Constructs, and Oozes automatically succeed on this saving throw.

Pollen burst can be used two times, then be reset by a short or long rest. The save DC increases by +1 at 4th level, 10th level, and 16th level

*Credit to MellieDM

Beneath your beautiful petals is a sheen of prickly thorns, and your magic makes them a frightful threat. As an action you can lash out at a creature within 20 feet of you, making a ranged attack with Charisma against them. If your attack hits, the creature takes 1d6 Piercing damage, and if the creature is Large or smaller, you pull the creature up to 5 feet closer to you. * Credit to MellieDM